A subway car is prepared to be lowered to the ground, with the help of a crane, from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. The elevated section of the Line 12 metro collapsed late Monday, killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Marco Ugarte)

Workers remove a damaged subway car after it was lowered, with the help of a crane, to the ground from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. The elevated section of the metro collapsed late Monday, killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Marco Ugarte)

Subway cars dangle at an angle from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. The elevated section of the metro's Line 12 collapsed late Monday killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Fernando Llano)

Subway cars dangle at an angle from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. The elevated section of the metro's Line 12 collapsed late Monday killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Fernando Llano)

People take photos of subway cars dangling at an angle from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. The elevated section collapsed late Monday killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Fernando Llano)

Firefighters work to lower to the ground a subway car dangling from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. The elevated section of Mexico City's metro collapsed late Monday killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Fernando Llano)

A subway car is prepared to be lowered to the ground, with the help of cranes, from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. The elevated section of the Line 12 metro collapsed late Monday, killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Marco Ugarte)

A woman demands information from a lawmaker of people injured when a metro overpass collapsed, near the site of the wreckage in Mexico City, Tuesday, May 4, 2021. The elevated section of the metro's Line 12 collapsed late Monday killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Fernando Llano)

An aerial view of subway cars dangle at an angle from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. The elevated section collapsed late Monday killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Fernando Llano)

An aerial view of subway cars dangle at an angle from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. The elevated section of Mexico City's metro collapsed late Monday killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Fernando Llano)

A damaged subway car is removed after it was lowered from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. The elevated section of the metro collapsed late Monday, killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Marco Ugarte)

A damaged subway car is removed after it was lowered from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. The elevated section of the metro collapsed late Monday, killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Marco Ugarte)

Subways cars are lowered to ground from a collapsed elevated section of the metro, in Mexico City, Tuesday, May 4, 2021. An elevated section of the Mexico City metro collapsed late Monday, killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Marco Ugarte)

People wait for the remains of relatives that died during the collapse of an elevated section of the city's subway system, outside a morgue in Mexico City, Tuesday, May 4, 2021. The elevated section of the metro collapsed late Monday, killing at least 23 people and injuring at least 79, city officials said. (AP Photo/Marco Ugarte)