Rescue efforts for potential survivors were halted Monday evening at the metro line 12 viaduct shortly after the crash, authorities said, citing the risk that more viaducts and train cars could crash. on the road.
Mexico City Mayor Claudia Sheinbaum said a crane was being transported to the site to stabilize train cars so rescuers could resume their work.
Sheinbaum said seven of those taken to hospital were in “serious condition” and undergoing surgery. She previously said a total of around 70 people were injured.
Wearing a helmet and face mask to speak to reporters at the crash scene, Sheinbaum said it looked like a beam had failed on the viaduct, but the cause was under investigation.
A video on local channel Milenio TV showed the structure collapsing over a stream of cars near Olivos station in the southeast of the city at around 10:30 p.m. local time (03:30 GMT Tuesday), sending clouds of dust and rubble.
Other images showed at least two train cars hanging precariously from the damaged viaduct as fire and emergency health teams initially used ladders to access the cars.
Metro line 12 was built when Foreign Minister Marcelo Ebrard was mayor of Mexico City.
“What happened today with the metro is a terrible tragedy. My solidarity with the victims and their families, ”Ebrard said on Twitter.
“Of course, the causes must be studied and the responsibilities defined. I reiterate that I am at the disposal of the authorities to help in whatever is necessary. “
Ebrard and Sheinbaum are seen by many political observers as President Andres Manuel Lopez Obrador’s most likely successors once his six-year term ends in 2024.