Two people were killed after an Air Canada flight collided with a Port Authority vehicle after landing at LaGuardia Airport, according to authorities.
The New York Police Department had earlier confirmed the collision but could not immediately offer additional information, including casualties.
There were 72 passengers and four crew members aboard the aircraft, a Jazz Aviation flight operating on behalf of Air Canada, according to a statement from the airline.
The flight originated at Montréal-Pierre Elliott Trudeau International Airport, the major airport serving Montreal.
The Port Authority of New York and New Jersey said in a statement that the jet had struck a rescue and firefighting vehicle that was responding to a separate incident at about 11:45 pm. The airport was closed as of 3 am to facilitate the investigation, officials said.
The fire department said it had "responded to a reported incident involving a plane and vehicle" on runway four.
The Federal Aviation Administration issued a ground stop for the airport, saying there was a "high" likelihood it would be extended.
Flight tracking platform FlightRadar24 said an Air Canada Express plane had "collided with an airport rescue and firefighting vehicle" while landing.
The aircraft, a CRJ-900 operated by Jazz Aviation, Air Canada's regional partner, had departed from Montreal and "was rolling down the runway when it struck" the vehicle as it crossed its path, according to the platform.
An audio clip, reportedly from the air traffic control tower, is circulating on social media, in which a panicked voice is heard shouting, “Stop, stop, stop!” at the truck driver seconds before it crashed into the plane.
Unverified social media images showed an Air Canada aircraft with a badly damaged nose and cockpit area apparently on a runway at night, with emergency vehicles nearby.
New York's emergency management authority warned people to "expect cancellations, road closures, traffic delays & emergency personnel" near the major transport hub in the borough of Queens.
"Use alternate routes," it said on X.
All departing flights from LaGuardia had been either delayed or cancelled as of early Monday, the airport's website showed.
LaGuardia had already been suffering from flight disruptions due to poor weather, the airport said Sunday on X.
Passengers were also waiting longer to pass security due to "staffing impacts" from a federal funding lapse, it said last week.
(With inputs from AFP and The Associated Press)