Southwest Airlines (LUV) flight 1380 from New York LaGuardia (LGA) to Dallas Love field (DAL) made an emergency landing at Philadelphia International Airport (PHL) as the airline’s Boeing 737-700 suffered damage mid-flight. At least one passenger was injured, according to early reports.

It appears that the accident occurred as debris of the broken engine shattered a window of the aircraft, causing depressurization and injuring a passenger.

Damage to the left engine of the aircraft, as well as its fuselage and no less than one window were confirmed by the Federal Aviation Administration, NBC News reports.

There were 143 passengers and five crew members on board.