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

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 plane showed damage consistent with gunfire.

“One flight attendant on board reported minor injuries and is being assessed by medical personnel,” the statement said. “No guest injuries were reported.”

Spirit said it is suspending its flights to Haiti pending an “assessment” of the incident and is removing the aircraft from service for the time being. A return flight to Florida will be arranged for the crew members and passengers diverted to the Dominican Republic.

The U.S. State Department subsequently warned of “gang-led efforts” to halt travel to Haiti and warned Americans not to go there.

Also on Monday, a post-flight inspection of the exterior of a JetBlue plane used for a trip from Port-au-Prince to New York City’s John F. Kennedy International Airport found evidence that it had been struck by a grenade , the airline said in a statement.

“No issues were initially reported by the operations crew,” JetBlue said.

The airline launched an investigation and said its flights to and from Haiti will be suspended until at least December 2. She blamed “ongoing civil unrest” for the pause in travel.

American Airlines said in a statement that it was also suspending its flights from Miami to Port-au-Prince.

“We will continue to monitor the situation with safety and security top of mind and will adjust our operations as necessary,” the report said.

The State Department said in an alert Monday from the U.S. Embassy in Port-au-Prince that it was aware of a lull in operations at the city’s airport.

“The U.S. Embassy in Port-au-Prince is aware of gang-led efforts to block travel to and from Port-au-Prince, including possible armed violence and disruptions to roads, ports and airports,” the alert said.

The State Department advises against travel to Haiti, which remains in the midst of violent political unrest. Even traveling within the Caribbean country is not recommended.

“You should consider your personal security situation before traveling to Haiti,” the embassy said. “Try to leave or travel within Haiti only if you think it is safe for you.”

Haiti has been conquered by armed groups vying for control after a power vacuum was created by the assassination of democratically elected President Jovenel Moïse in 2021. Ariel Henry, the deeply unpopular Prime Minister at the time, took on the role of President and succeeded not to hold elections.

And when he postponed elections again this year, violence ensued as armed militias plunged the country into civil unrest and endangered the lives of civilians.

Henry said in April that he would resign as soon as other Caribbean countries and parties established a transitional government.