An elevated subway platform collapsed in Mexico City, killing at least 23 and injuring dozens

• An overpass collapsed along a Mexico City metro route, killing at least 23 and injuring dozens.
• The incident happened on the metro's newest line, Line 12, between the Olivos and Tezonco stations.
• The subway line had been plagued by structural issues for several years.

A metro platform with a train on it collapsed in Mexico City on Monday night, killing at least 23 people and injuring more than 70 others, the city's mayor said.

The collapse happened at about 10:25 p.m., the country's newspaper La Jornada reported, along the Line 12 train. Line 12 runs from Mixcoac to Tláhuac, and the collapse happened between the Olivos and Tezonco stations in the southern part of the city.

"A support beam gave way," Mayor Claudia Sheinbaum said, according to the Associated Press.

A CCTV camera caught the moment the structure collapsed:

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City officials said early Tuesday that 49 of those injured had been taken to the hospital.

Line 12 has been plagued by structural problems almost since its opening in 2012.

In 2014, a stretch of the route between Tláhuac and Atlalilco had to be shut down for several months to address structural problems.

The Metro system's head at the time, Joel Ortega, said then that problems "were already present since the opening of the line, but they worsened over time and reached a greater degree of complication when they began operating all the trains."