A passenger aboard a Southwest Airlines flight found a fully loaded ammunition clip belonging to police officer's service weapon during a flight from Burbank to Phoenix Tuesday.

Southwest Airlines spokesman Paul Flaningan says that after the passenger found the clip in flight, he handed it over to the flight crew.

The plane landed safely in Phoenix and the passengers on flight 1297 were taken off and rescreened. The plane was also swept and no other weapons were found.

The passenger was met by TSA and Phoenix police at Sky Harbor International Airport and questioned.

Flaningan says the clip apparently was dropped accidentally by a licensed law enforcement officer who declared he had the clip. The law enforcement officer was on a previous flight.

It's not clear how long the ammunition clip was on the plane or the caliber of the clip.

Flanigan was unable to say if the officer was an Air Marshal or a police officer.