India, March 23 -- A late-night aviation incident involving an Air Canada Express regional jet and a ground vehicle forced the temporary shutdown of New York's LaGuardia Airport on Sunday, triggering emergency responses, flight diversions and investigations by US authorities. Here are five key developments from the incident.

An Air Canada Express plane struck a Port Authority ground vehicle shortly after landing at LaGuardia Airport late Sunday night. The aircraft, operated by Air Canada's regional partner Jazz Aviation, had arrived from Montreal and was involved in the collision on Runway 4.

According to flight tracking data, Flight AC8646 landed at approximately 11:37 p.m. local time. The aircraft - a CRJ-900 regional jet - reportedly...