Cellphone video shows the scene of an overpass collapse in Mexico City that killed multiple people. (SUUMA_CDMX via CNN)

(CNN) -- An overpass carrying a subway train collapsed in Mexico City late Monday, killing at least 23 people, including children, according to local government officials.

At least 65 people have been hospitalized, seven of whom are in serious condition, Mexico City Mayor Claudia Sheinbaum said.

Mexico City overpass collapse

An aerial view of the scene after an elevated section of metro track in Mexico City, carrying train cars with passengers, collapsed onto a busy road on May 03, 2021 in Mexico City, Mexico. (Photo by Hector Vivas/Getty Images)

The train was traveling on an elevated part of the city's rapid transit system on the newest Line 12, also known as the Golden Line, when part of the overpass collapsed onto traffic below, Mexico's Secretariat of Risk Management and Civil Protection said.

CCTV surveillance footage shows the moment the overpass collapsed onto the street, sending up a cloud of dust and debris.

The incident happened at 10:25 p.m. local time, according to Mexico City's Interior Minister Alfonso Suarez Del Real.

Sheinbaum tweeted from the scene: "Firefighters, public safety personnel are working. Various hospitals are serving. We will give more information shortly."

Mexico City overpass collapse

Rescue workers gather at the site of a train accident after an elevated metro line collapsed in Mexico City on May 4, 2021. (Photo by Pedro Pardo/AFP via Getty Images)

The mayor said one survivor was trapped in a vehicle beneath the rubble, but has since been freed. There were no other people trapped, the mayor said.

Rescue efforts were temporarily suspended earlier in the night due to concerns over the stability of the subway car, which was still dangling over the road.

Sheinbaum said 49 people had been transferred to hospitals, seven of whom were in a serious condition. Minors were among the dead, she said.

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