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The elevated train derailed in Mexico City after a concrete overpass it was crossing collapsed on Monday night. Thirteen people were killed and close to 70 were injured, according to early data from government officials.
Videos posted online show the two wagons colliding with each other on the ground, landing at a V-angle.
The derailment occurred on line 12 of the subway system at Olivos station, according to the Mexican Civil Protection Agency. Shortly after the crash, metro service in Mexico City warned the public to stay away from the area.
Photos shared on Twitter show emergency services using a ladder to climb into one of the windows of the collapsed wagon.
This is an evolving story. Some facts transmitted by the media may later turn out to be wrong. We will focus on the reports of police officers and other authorities, credible news and journalists who are at the scene, and we will update them as the situation develops.