At least 15 people died and 70 injured after a Mexico City viaduct partially collapsed on the road Monday evening. The incident saw Mexico City’s metro line 12 plunge into cars under the overpass, which was about five meters (about 16 feet) above the road.

Mexico City Mayor Claudia Sheinbaum said “a support beam gave way”, explaining that it collapsed as the train passed over it.

Rescue efforts were briefly halted at midnight as the partially suspended train was “very weak,” Sheinbaum said, and there were concerns that it would slide further down the road.

Authorities said at least one car was trapped under the rubble. People were still trapped inside the train, although “we don’t know if they are alive,” the mayor added.

Emergency medical teams and firefighters were reportedly on the scene looking for survivors.

This is a developing story and this article will be updated as more information becomes available.

Mexico City metro accident in May 2021
Rescue workers at the scene of the Mexico City metro crash in Mexico City on May 3.
Pedro Pardo / AFP via Getty Images