One passenger is dead after a Southwest Airlines jet’s engine failed in mid-flight, with some parts penetrating the passenger compartment and forcing the pilot to make an emergency landing in Philadelphia.

One passenger was partially sucked from the plane when shrapnel pierced a window, and it’s unclear whether she’s the person who died. Flight 1380, which was carrying 144 passengers and five crew members, was traveling from LaGuardia Airport in New York City to Love Field in Dallas, said National Transportation Safety Board Chairman Robert Sumwalt.