A Black Hawk helicopter with three crew members aboard crashed Thursday in central Minnesota, the Minnesota National Guard said, though officials did not offer any immediate information about the conditions of crew members.

The Guard tweeted that the UH-60 crashed south of St. Cloud and that authorities were on the scene.

The Guard lost contact with the helicopter shortly after taking off on a maintenance test flight from St. Cloud on Thursday afternoon, Guard Master Sgt. Blair Heusdens said. The helicopter called mayday about nine minutes after takeoff.

Emergency vehicles gather near the scene of a reported helicopter crash Thursday, Dec. 5, 2019, near Marty, Minn.  A Black Hawk helicopter with three crew members aboard crashed Thursday in central Minnesota, a state National Guard official said. (Dave SchwarzSt. Cloud Times via AP)

Emergency vehicles gather near the scene of a reported helicopter crash Thursday, Dec. 5, 2019, near Marty, Minn. A Black Hawk helicopter with three crew members aboard crashed Thursday in central Minnesota, a state National Guard official said. (Dave SchwarzSt. Cloud Times via AP)

“Our first priority is the safety and well-being of our Guardsmen and our thoughts are with our soldiers and their families at this time," Heusdens said in a statement before the crash was confirmed.

The Black Hawk sent a mayday signal at 2:15 p.m., Stearns County Chief Sheriff's Deputy Dan Miller told reporters. Crews from multiple departments spent several hours searching before finding the crash, Miller said. He had no comment on the helicopter's occupants and said authorities were waiting for military personnel to arrive.

Television aerial footage showed the wreck of the helicopter along a tree line near open fields near St. Cloud, a city about 59 miles (95 kilometers) northwest of Minneapolis. Apparent scorch marks encircled the flattened wreckage in the snow.

A rescue worker rides an ATV near the scene of a reported helicopter crash Thursday, Dec. 5, 2019, near Marty, Minn.  A Black Hawk helicopter with three crew members aboard crashed Thursday in central Minnesota, a state National Guard official said. (Dave SchwarzSt. Cloud Times via AP)

A rescue worker rides an ATV near the scene of a reported helicopter crash Thursday, Dec. 5, 2019, near Marty, Minn. A Black Hawk helicopter with three crew members aboard crashed Thursday in central Minnesota, a state National Guard official said. (Dave SchwarzSt. Cloud Times via AP)

The Guard’s base near St. Cloud Regional Airport has been in operation since 2009, with Black Hawk and Chinook helicopters maintained there.

Gov. Tim Walz canceled a tree-lighting ceremony, and a spokesman said he was headed to the St. Cloud area near the crash site. Walz served for 24 years in the Army National Guard, while he was a schoolteacher and coach, but retired in 2005 to run for Congress.

The Minnesota State Patrol was called to bring in a helicopter to help with the search. A State Patrol Cirrus aircraft, equipped with thermal imaging cameras, also helped in the search.