AT LEAST 20 people have died, including children, after a Mexico City metro overpass partially collapsed onto a road.
Around 70 more have been injured in the tragedy, officials say.
Videos on Mexican television show train cars hanging in mid-air as sirens blared nearby.
Meanwhile, footage shown on Milenio TV showed the overpass collapsing onto cars on a road below.
Another video showed emergency medical crews and firefighters desperately searching through wreckage for survivors.
Mexico City’s mayor said on Twitter that a support beam had given way, causing the carriages to fall.
Claudia Sheinbaum said “firefighters, public safety personnel are working. Various hospitals attending".
"We will give more information shortly,” she added.
The city's Comprehensive Risk Management and Civil Protection Agency initially put the toll at 13 and 70 people injured.
Tragically, the number of people known to have died has since risen.
Mexico train crash: At least 20 dead including children after subway train derails as horror pics show smashed carriages
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