Dallas, Texas. (WHAS11)- The FBI says a flight bound for Dallas returned to Philadelphia after what turned out to be a hoax.
Authorities say they received a call that liquid explosives could be on board.
Passengers were removed from the plane and bused away as authorities surrounded the aircraft.
One person was removed from the plane and police dogs were searching the area of the plane.
Authorities now say that man was not a suspect and someone played a nasty trick on the passenger by calling and telling authorities he had a dangerous substance.
Police are treating the hoax seriously; the plane was cleared to take off to Dallas.