PHILADELPHIA -- Federal authorities are at Philadelphia's airport because of an apparent bomb threat made in connection with an incoming flight from Ireland.
USAirways Flight 777 from Shannon landed at Philadelphia International Airport on Wednesday afternoon.
Law enforcement officials met the plane on the tarmac and passengers exited the jet to waiting buses. FBI spokeswoman Carrie Adamowski says agents are assisting Transportation Security Administration officials in the investigation.
Police and airport officials say they don't have any specifics about the apparent threat or details about from where it may have originated.
U.S. customs officials have screening facilities at Shannon Airport and the passengers aboard the plane would have gone through them before boarding.