A pilot and co-pilot were killed when an Air Canada passenger plane collided with a fire truck on a LaGuardia Airport runway late Sunday, according to two sources familiar with the investigation.

The plane, a Jazz Aviation flight operating on behalf of Air Canada, struck a Port Authority vehicle that was responding a separate incident around 11:40 p.m., according to the Port Authority of New York and New Jersey.

Two other people, a sergeant and an officer, have broken limbs and are in stable condition at a hospital, according to preliminary information from the sources.

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Air Canada jet strikes fire truck at LaGuardia
Authorities say the crash late Sunday killed the pilot and copilot, with dozens injured. Airports and airlines face renewed scrutiny over runway safety, as officials investigate how a vehicle entered the runway.

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Both pilots killed after passenger jet hits ground truck at New York’s LaGuardia airport

Jazz Aviation said 72 passengers and four crew were on board Flight 8646, but said that number was based on the preliminary passenger list.

More than a dozen suffered varying degrees of injuries, according to preliminary information from a senior official with knowledge of the investigation.

Some of those injured were taken to Elmhurst and Queens Presbyterian hospitals, the source said.

Port Authority described the truck as an aircraft rescue and firefighting vehicle. It was manned by police officers, the sources said.

LaGuardia Crash (Ryan Murphy / AP)

An Air Canada Jet sits on the runway at LaGuardia Airport in New York on Monday after colliding with a Port Authority vehicle. (Ryan Murphy / AP)
(Ryan Murphy)

The sources said the plane was at the end of landing and going about 30 mph when the collision occurred.

The Federal Aviation Administration said the plane was a Bombardier CRJ-900 twin-jet aircraft flown by Air Canada Express, also known as Jazz Aviation, from Montreal.

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The accident happened on LaGuardia’s Runway 4, it said. The FAA said it was investigating the crash and the Port Authority Police Department is on the scene as the investigation gets underway.

The National Transportation Safety Board has sent a “go team” to the scene of the collision and will send an investigative team later today.

Video posted on social media a passenger jet on the runway with its cockpit high and the underside of its forward fuselage mangled.

The airport was closed and flights will not take off or land at LaGuardia until 2 p.m. Monday at the earliest, according to the FAA.

NYPD told people to avoid the area surrounding LaGuardia and expect local disruption as all streets and highways exits into the airport are also closed.

The National Transportation Safety Board said it is launching a go team to investigate the collision.

This article was originally published on NBCNews.com