London-to-Boston Flight Returns to Heathrow Because of Security Issue

London - A London-to-Boston flight was called back to Heathrow Airport because of a security issue, and four passengers were being questioned by border control officers.
American Airlines Flight 109, a Boeing 777, left London headed for Boston, said Tim Wagner, a spokesman for the Fort Worth, Texas-based airline. "The flight returned to Heathrow due to a security issue that needed to be resolved in London," he said. "It was not a security threat to the aircraft. The flight was in no danger."

Wagner provided no other details, referring further questions to security services. He declined to say whether a governmental agency had requested the turnaround.

Port and border control officials were questioning four passengers removed from the flight.