Philadelphia International Airport officials say that a plane had to be evacuated after they received a threat that a bomb was on a flight early Saturday morning.
The call came into airport officials at around 2 a.m., saying that there was a bomb on a plane. But there caller gave a flight number that did not match any flights, according to an airport spokesperson.
The only plane on the ground at the time of the threat was a small US Airways commuter plane, and officials evacuated all 28 passengers.
A search for the alleged bomb came up with nothing, officials say. A spokesperson would not specify which flight was disrupted from its schedule.
There have been no arrests and police say the investigation is ongoing, an official said.