A commuter exits a closed off station after a subway train derailment, Tuesday, June 27, 2017, in the Harlem neighborhood of NY.
Tuesday's crash, which happened just before 10 a.m. local time near the 125th Street station, forced the evacuation of passengers from dark, smoke-filled train cars.
The accident occurred about 10 a.m. local time on route A of the NY subway with a train going South.
At least 34 people had injuries including smoke inhalation, though all were expected to be OK, fire officials said.
Lhota said the derailed train still had to be removed in order to establish the extent of the track damage.More news: Your smartphone is a 'brain drain' - even when it's off, study says
The Metropolitan Transportation Authority (MTA) confirmed in a Twitter post that an "A" train had derailed at 125 Street.
Subway officials said the emergency brakes on a southbound "A" train were triggered, causing the two cars to derail and hit the wall of a tunnel. It is "under investigation", said the company MTA, which manages transit in NY city. "New Yorkers deserve better".
Delays were reported throughout the subway system, which has been plagued by problems this year.
The No. 1 train prepares to leave the South Ferry Station, Tuesday June 27, 2017, in NY.
Lhota oversaw the subway system's recovery after it was flooded by Hurricane Sandy in 2012. He said he didn't know yet if a passenger had pulled the emergency brake. Every day, we're treated to a new stream of cell-phone photos and videos broadcasting subway crises on social media in real time.More news: U.S. warplane blasts Syrian drone from sky
Passengers ended up walking through the darkened cars using their cellphone lights and exiting onto the platform. The smoke was caused by sparks and the garbage and sanitation along the subway tracks. Joseph Lhota, who Cuomo appointed as MTA chairman last Wednesday, was on the scene.
That initiative directs $14 billion over five years toward improving the subway system. In April, a power outage backed up trains around the city and closed a key Manhattan station for 12 hours.
It also comes less than two weeks before the start of Amtrak's summer-long work to fix aging infrastructure at New York Penn Station, a project that is expected to increase subway volume as commuters seek alternatives.
This comes as the nation's busiest transit system is under fire for long delays and cancellations.More news: Second major cyber attack in two months disrupts businesses around world
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