Mexican police and immigration agents detained hundreds of Central American migrants Monday in the largest single raid on a migrant caravan since the groups started moving through Mexico last year.

Police targeted isolated groups at the tail end of a caravan of about 3,000 migrants who were making their way through the southern state of Chiapas with hopes of reaching the U.S. border.

Click to Gallery

Central American migrants traveling in a caravan to the U.S. border walk hand in hand on the shoulder of a road in Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Mexican police and immigration agents detained hundreds of Central American migrants Monday in the largest single raid on a migrant caravan since the groups started moving through Mexico last year.
Central American migrants traveling in a caravan to the U.S. border walk on the shoulder of a road as they make their way to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

The pickup trucks took them to buses, presumably to take them to the nearest immigration station and start proceedings to deport them. As many as 500 migrants may have been picked up in the raid.
Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)
Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)
A Central American migrant traveling in a caravan to the U.S. border rests on the highway near Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant traveling in a caravan to the U.S. border rests on the highway near Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)
Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Chiapas State, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Chiapas State, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)
A Central American migrant who is part of a caravan to the U.S. border, pushes a baby carriage as he walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant who is part of a caravan to the U.S. border, pushes a baby carriage as he walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)
Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)
A Central American migrant traveling in a caravan to the U.S. border walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant traveling in a caravan to the U.S. border walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)
Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)
More Images
Central American migrants traveling in a caravan to the U.S. border walk hand in hand on the shoulder of a road in Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Mexican police and immigration agents detained hundreds of Central American migrants Monday in the largest single raid on a migrant caravan since the groups started moving through Mexico last year.

Central American migrants traveling in a caravan to the U.S. border walk on the shoulder of a road as they make their way to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

The pickup trucks took them to buses, presumably to take them to the nearest immigration station and start proceedings to deport them. As many as 500 migrants may have been picked up in the raid.

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant traveling in a caravan to the U.S. border rests on the highway near Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant traveling in a caravan to the U.S. border rests on the highway near Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Chiapas State, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Chiapas State, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant who is part of a caravan to the U.S. border, pushes a baby carriage as he walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant who is part of a caravan to the U.S. border, pushes a baby carriage as he walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant traveling in a caravan to the U.S. border walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant traveling in a caravan to the U.S. border walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

As migrants gathered under spots of shade in the burning heat, federal police and agents passed by with patrol trucks and vans and forcibly wrestled the migrants into the trucks.

Central American migrants traveling in a caravan to the U.S. border walk hand in hand on the shoulder of a road in Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk hand in hand on the shoulder of a road in Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

The pickup trucks took them to buses, presumably to take them to the nearest immigration station and start proceedings to deport them. As many as 500 migrants may have been picked up in the raid.

Some of the women and children on the caravan wailed and screamed during the detentions on the side of a highway.

Mexico had welcomed the first caravans last year, but the reception has gotten colder since tens of thousands of migrants overwhelmed U.S. border crossings, causing delays at the border and anger among Mexican residents.

Central American migrants traveling in a caravan to the U.S. border walk on the shoulder of a road as they make their way to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the shoulder of a road as they make their way to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)
Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

 Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

 A Central American migrant traveling in a caravan to the U.S. border rests on the highway near Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant traveling in a caravan to the U.S. border rests on the highway near Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

 Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Chiapas State, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Chiapas State, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)
A Central American migrant who is part of a caravan to the U.S. border, pushes a baby carriage as he walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant who is part of a caravan to the U.S. border, pushes a baby carriage as he walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

 Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

 A Central American migrant traveling in a caravan to the U.S. border walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

A Central American migrant traveling in a caravan to the U.S. border walks on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

 Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)

Central American migrants traveling in a caravan to the U.S. border walk on the highway to Pijijiapan, Mexico, Monday, April 22, 2019. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up, so this group is hungrier, advancing slowly or not at all, and hounded by unhelpful local officials. (AP PhotoMoises Castillo)