A passenger who claimed she had a surgically implanted device forced a U.S. airline flight from Paris to make an emergency landing Tuesday.

Two U.S. F-15 fighter jets were scrambled to escort U.S. Airways Flight 787 to a safe landing in Bangor, Maine. The plane was headed to Charlotte, North Carolina.

A female French passenger born in Cameroon passed a note to a flight attendant saying that she had a device implanted inside of her. She was travelling alone and had no checked baggage.

Doctors examined the woman in Maine, but say they could not find any scars or signs of recent surgery. She was turned over to the FBI.

The FBI and Department of Homeland Security have warned airlines that terrorists with surgically implanted bombs may try to board U.S.-bound flights.