It was 24 hours of terror and death, hope and heroism in Mexico.

The body of woman hangs crushed by a collapsed building felled by 7.1 magnitude earthquake, in the neighborhood of Roma Norte, in Mexico City, Tuesday, Sept. 19, 2017.  (AP Photo/Marco Ugarte)

The body of woman hangs crushed by a collapsed building felled by 7.1 magnitude earthquake, in the neighborhood of Roma Norte, in Mexico City, Tuesday, Sept. 19, 2017.  (AP Photo/Marco Ugarte)

Efforts continue at the scenes of dozens of collapsed buildings, where firefighters, police, soldiers and civilians continue their search to reach the living. (AP Photo/Moises Castillo)

Efforts continue at the scenes of dozens of collapsed buildings, where firefighters, police, soldiers and civilians continue their search to reach the living. (AP Photo/Moises Castillo)

A Red Cross worker stands, top center, on a collapsed building where rescuers continue searching for people trapped inside, in the Roma Norte neighborhood of Mexico City.(AP Photo/Rebecca Blackwell)

A Red Cross worker stands, top center, on a collapsed building where rescuers continue searching for people trapped inside, in the Roma Norte neighborhood of Mexico City.(AP Photo/Rebecca Blackwell)

A faint, gentle swaying in the early afternoon on Tuesday quickly escalated into a violent, sickening dance with concrete as a magnitude 7.1 earthquake cracked and crumbled vulnerable buildings old and new.

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The body of woman hangs crushed by a collapsed building felled by 7.1 magnitude earthquake, in the neighborhood of Roma Norte, in Mexico City, Tuesday, Sept. 19, 2017.  (AP Photo/Marco Ugarte)

It was 24 hours of terror and death, hope and heroism in Mexico.

Efforts continue at the scenes of dozens of collapsed buildings, where firefighters, police, soldiers and civilians continue their search to reach the living. (AP Photo/Moises Castillo)

Efforts continue at the scenes of dozens of collapsed buildings, where firefighters, police, soldiers and civilians continue their search to reach the living. (AP Photo/Moises Castillo)

A Red Cross worker stands, top center, on a collapsed building where rescuers continue searching for people trapped inside, in the Roma Norte neighborhood of Mexico City.(AP Photo/Rebecca Blackwell)

A Red Cross worker stands, top center, on a collapsed building where rescuers continue searching for people trapped inside, in the Roma Norte neighborhood of Mexico City.(AP Photo/Rebecca Blackwell)

Volunteers organize donated supplies outside the Enrique Rebsamen school that collapsed where search and rescue efforts continue in the aftermath of a 7.1 magnitude earthquak, in Mexico City, Wednesday, Sept. 20, 2017.  (AP Photo/Marco Ugarte)

A faint, gentle swaying in the early afternoon on Tuesday quickly escalated into a violent, sickening dance with concrete as a magnitude 7.1 earthquake cracked and crumbled vulnerable buildings old and new.

Rescue workers rest atop a toppled gate and amid debris as others continue the search and rescue efforts at the Enrique Rebsamen school that collapsed after an earthquake in Mexico City, Wednesday, Sept. 20, 2017.  (AP Photo/Marco Ugarte)

Rescue workers rest atop a toppled gate and amid debris as others continue the search and rescue efforts at the Enrique Rebsamen school that collapsed after an earthquake in Mexico City, Wednesday, Sept. 20, 2017.  (AP Photo/Marco Ugarte)

Rescue workers search for people trapped inside a collapsed building felled by a 7.1 magnitude earthquake in the Del Valle area of Mexico City, Wednesday, Sept. 20, 2017.  (AP Photo/Rebecca Blackwell)

Rescue workers search for people trapped inside a collapsed building felled by a 7.1 magnitude earthquake in the Del Valle area of Mexico City, Wednesday, Sept. 20, 2017.  (AP Photo/Rebecca Blackwell)

People walk towards the Santiago Apostol church which collapsed during the 7.1 earthquake in the town of Atzala, in Puebla state, Mexico, late Tuesday, Sept. 19, 2017.  (AP Photo/Pablo Spencer)

Hundreds were trapped in the country's deadliest quake in three decades.

A door stands surrounded in the debris of a home demolished by a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. The U.S. Geological Survey said the magnitude 7.1 quake hit at 1:14 p.m. (2:14 p.m. EDT). (AP Photo/Eduardo Verdugo)

A door stands surrounded in the debris of a home demolished by a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. The U.S. Geological Survey said the magnitude 7.1 quake hit at 1:14 p.m. (2:14 p.m. EDT). (AP Photo/Eduardo Verdugo)

Residents salvage personal items from a home damaged in a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. People across central Mexico already had rallied to help their neighbors as dozens of buildings tumbled into mounds of broken concrete. (AP Photo/Eduardo Verdugo)

Residents salvage personal items from a home damaged in a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. People across central Mexico already had rallied to help their neighbors as dozens of buildings tumbled into mounds of broken concrete. (AP Photo/Eduardo Verdugo)

A man walks his bike past a building felled by a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. Buildings collapsed in Morelos state, including the town hall and local church in Jojutla near the quake's epicenter. (AP Photo/Eduardo Verdugo)

A man walks his bike past a building felled by a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. Buildings collapsed in Morelos state, including the town hall and local church in Jojutla near the quake's epicenter. (AP Photo/Eduardo Verdugo)

A man walks through a door frame of a building that collapsed during a 7.1 magnitude earthquake, in the Condesa neighborhood of Mexico City, Tuesday, Sept. 19, 2017. (AP Photo/Marco Ugarte)

Dozens of people were pulled to safety, often dust-covered and stunned, sometimes injured. But more than 200 died, some in the collapse of large Mexico City buildings, some in rural homes and damaged churches closer to the epicenter in the state of Puebla.

Rescue workers and volunteers search for survivors in the aftermath of a 7.1 magnitude earthquake, at the Ninos Heroes neighborhood in Mexico City, Tuesday, Sept. 19, 2017. Workers, some wearing helmets, sometimes calling for silence, as they tried to reach survivors. (AP Photo/Miguel Tovar)

Rescue workers and volunteers search for survivors in the aftermath of a 7.1 magnitude earthquake, at the Ninos Heroes neighborhood in Mexico City, Tuesday, Sept. 19, 2017. Workers, some wearing helmets, sometimes calling for silence, as they tried to reach survivors. (AP Photo/Miguel Tovar)

Volunteers search a building that collapsed after an earthquake, in the Roma neighborhood of Mexico City, Tuesday, Sept. 19, 2017. (AP Photo/Eduardo Verdugo)

Volunteers search a building that collapsed after an earthquake, in the Roma neighborhood of Mexico City, Tuesday, Sept. 19, 2017. (AP Photo/Eduardo Verdugo)

Rescue workers and volunteers search for survivors in a building felled by a 7.1 earthquake, in the Colonia Obrera neighborhood of Mexico City, Tuesday, Sept. 19, 2017.  (AP Photo/Miguel Tovar)

As night fell, many remained outside in streets or parks, fearful of returning to the buildings that might have been damaged. With many streets blocked by rubble, rescue lines or feared gas leaks, some avenues became parking lots — sometimes keeping people from reaching home.

Volunteers bring pieces of wood to help prop up sections of the collapsed Enrique Rebsamen school, as rescue workers search for children trapped inside, in Mexico City, Tuesday, Sept. 19, 2017. (AP Photo/Gerardo Carrillo)

Volunteers bring pieces of wood to help prop up sections of the collapsed Enrique Rebsamen school, as rescue workers search for children trapped inside, in Mexico City, Tuesday, Sept. 19, 2017. (AP Photo/Gerardo Carrillo)

A man is rescued from a collapsed building in the Condesa neighborhood after an earthquake struck Mexico City, Tuesday, Sept. 19, 2017. A mix of neighborhood volunteers, police and firefighters used trained dogs and their bare hands to search through the ruins for survivors. (AP Photo/Pablo Ramos)

A man is rescued from a collapsed building in the Condesa neighborhood after an earthquake struck Mexico City, Tuesday, Sept. 19, 2017. A mix of neighborhood volunteers, police and firefighters used trained dogs and their bare hands to search through the ruins for survivors. (AP Photo/Pablo Ramos)

People by the millions rushed from homes and offices across central Mexico, sometimes watching as buildings they had just fled fell behind them with an eruption of dust and debris.

Volunteers organize donated supplies outside the Enrique Rebsamen school that collapsed where search and rescue efforts continue in the aftermath of a 7.1 magnitude earthquak, in Mexico City, Wednesday, Sept. 20, 2017.  (AP Photo/Marco Ugarte)

Volunteers organize donated supplies outside the Enrique Rebsamen school that collapsed where search and rescue efforts continue in the aftermath of a 7.1 magnitude earthquak, in Mexico City, Wednesday, Sept. 20, 2017.  (AP Photo/Marco Ugarte)

Rescue workers rest atop a toppled gate and amid debris as others continue the search and rescue efforts at the Enrique Rebsamen school that collapsed after an earthquake in Mexico City, Wednesday, Sept. 20, 2017.  (AP Photo/Marco Ugarte)

Rescue workers rest atop a toppled gate and amid debris as others continue the search and rescue efforts at the Enrique Rebsamen school that collapsed after an earthquake in Mexico City, Wednesday, Sept. 20, 2017.  (AP Photo/Marco Ugarte)

Rescue workers search for people trapped inside a collapsed building felled by a 7.1 magnitude earthquake in the Del Valle area of Mexico City, Wednesday, Sept. 20, 2017.  (AP Photo/Rebecca Blackwell)

Rescue workers search for people trapped inside a collapsed building felled by a 7.1 magnitude earthquake in the Del Valle area of Mexico City, Wednesday, Sept. 20, 2017.  (AP Photo/Rebecca Blackwell)

Hundreds were trapped in the country's deadliest quake in three decades.

Survivors quickly rallied, clambering over grotesque ruins of buildings and joining professional rescue workers to try to save friends, neighbors and strangers. Snaking lines formed as people passed rubble from buildings hand-to-hand and moved along supplies in the opposite direction to other rescuers. Cheers and victorious chants erupted when victims were found alive.

People walk towards the Santiago Apostol church which collapsed during the 7.1 earthquake in the town of Atzala, in Puebla state, Mexico, late Tuesday, Sept. 19, 2017.  (AP Photo/Pablo Spencer)

People walk towards the Santiago Apostol church which collapsed during the 7.1 earthquake in the town of Atzala, in Puebla state, Mexico, late Tuesday, Sept. 19, 2017.  (AP Photo/Pablo Spencer)

A door stands surrounded in the debris of a home demolished by a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. The U.S. Geological Survey said the magnitude 7.1 quake hit at 1:14 p.m. (2:14 p.m. EDT). (AP Photo/Eduardo Verdugo)

A door stands surrounded in the debris of a home demolished by a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. The U.S. Geological Survey said the magnitude 7.1 quake hit at 1:14 p.m. (2:14 p.m. EDT). (AP Photo/Eduardo Verdugo)

Residents salvage personal items from a home damaged in a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. People across central Mexico already had rallied to help their neighbors as dozens of buildings tumbled into mounds of broken concrete. (AP Photo/Eduardo Verdugo)

Residents salvage personal items from a home damaged in a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. People across central Mexico already had rallied to help their neighbors as dozens of buildings tumbled into mounds of broken concrete. (AP Photo/Eduardo Verdugo)

A man walks his bike past a building felled by a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. Buildings collapsed in Morelos state, including the town hall and local church in Jojutla near the quake's epicenter. (AP Photo/Eduardo Verdugo)

A man walks his bike past a building felled by a 7.1 earthquake, in Jojutla, Morelos state, Mexico, Wednesday, Sept. 20, 2017. Buildings collapsed in Morelos state, including the town hall and local church in Jojutla near the quake's epicenter. (AP Photo/Eduardo Verdugo)

Dozens of people were pulled to safety, often dust-covered and stunned, sometimes injured. But more than 200 died, some in the collapse of large Mexico City buildings, some in rural homes and damaged churches closer to the epicenter in the state of Puebla.

Many of the buildings fell precisely in the neighborhoods hit hardest by the notorious 1985 quake that killed thousands and seared itself into Mexico City's self-image — places like the trendy Roma and Condesa districts or the gritty Colonia Obrera.

A man walks through a door frame of a building that collapsed during a 7.1 magnitude earthquake, in the Condesa neighborhood of Mexico City, Tuesday, Sept. 19, 2017. (AP Photo/Marco Ugarte)

A man walks through a door frame of a building that collapsed during a 7.1 magnitude earthquake, in the Condesa neighborhood of Mexico City, Tuesday, Sept. 19, 2017. (AP Photo/Marco Ugarte)

Rescue workers and volunteers search for survivors in the aftermath of a 7.1 magnitude earthquake, at the Ninos Heroes neighborhood in Mexico City, Tuesday, Sept. 19, 2017. Workers, some wearing helmets, sometimes calling for silence, as they tried to reach survivors. (AP Photo/Miguel Tovar)

Rescue workers and volunteers search for survivors in the aftermath of a 7.1 magnitude earthquake, at the Ninos Heroes neighborhood in Mexico City, Tuesday, Sept. 19, 2017. Workers, some wearing helmets, sometimes calling for silence, as they tried to reach survivors. (AP Photo/Miguel Tovar)

Volunteers search a building that collapsed after an earthquake, in the Roma neighborhood of Mexico City, Tuesday, Sept. 19, 2017. (AP Photo/Eduardo Verdugo)

Volunteers search a building that collapsed after an earthquake, in the Roma neighborhood of Mexico City, Tuesday, Sept. 19, 2017. (AP Photo/Eduardo Verdugo)

As night fell, many remained outside in streets or parks, fearful of returning to the buildings that might have been damaged. With many streets blocked by rubble, rescue lines or feared gas leaks, some avenues became parking lots — sometimes keeping people from reaching home.

All the while, rescue work continued by flashlight and floodlamp during the night, then once again by daylight, as rescues came slower and desperation grew for those still trapped, such as children buried under the rubble of a collapsed school.

Rescue workers and volunteers search for survivors in a building felled by a 7.1 earthquake, in the Colonia Obrera neighborhood of Mexico City, Tuesday, Sept. 19, 2017.  (AP Photo/Miguel Tovar)

Rescue workers and volunteers search for survivors in a building felled by a 7.1 earthquake, in the Colonia Obrera neighborhood of Mexico City, Tuesday, Sept. 19, 2017.  (AP Photo/Miguel Tovar)

Volunteers bring pieces of wood to help prop up sections of the collapsed Enrique Rebsamen school, as rescue workers search for children trapped inside, in Mexico City, Tuesday, Sept. 19, 2017. (AP Photo/Gerardo Carrillo)

Volunteers bring pieces of wood to help prop up sections of the collapsed Enrique Rebsamen school, as rescue workers search for children trapped inside, in Mexico City, Tuesday, Sept. 19, 2017. (AP Photo/Gerardo Carrillo)

A man is rescued from a collapsed building in the Condesa neighborhood after an earthquake struck Mexico City, Tuesday, Sept. 19, 2017. A mix of neighborhood volunteers, police and firefighters used trained dogs and their bare hands to search through the ruins for survivors. (AP Photo/Pablo Ramos)

A man is rescued from a collapsed building in the Condesa neighborhood after an earthquake struck Mexico City, Tuesday, Sept. 19, 2017. A mix of neighborhood volunteers, police and firefighters used trained dogs and their bare hands to search through the ruins for survivors. (AP Photo/Pablo Ramos)