Gunfire hit a Spirit Airlines flight to Haiti on Monday, injuring a crew member, and may have struck a separate flight from the country as the State Department warned of “gang-led efforts” to stop travel to the Caribbean nation.

Spirit confirmed in a statement that one of its flights from Fort Lauderdale, Florida, to Port-au-Prince, Haiti, was diverted to the Dominican Republic on Monday. It said an inspection of the aircraft showed damage consistent with gunfire.

“One Flight Attendant on…