A U.S. Airways passenger jet on a flight to Charlotte, N.C., Friday was diverted to Oklahoma City after a federal air marshal subdued a passenger who was involved in an incident with a flight attendant, a spokesman for the airline said.

The airplane landed at Will Rogers World Airport and law enforcement officers were questioning the passenger, said Morgan Durrant, a spokesman for the airline. He did not disclose the nature of the problem between the passenger and the flight attendant.

The twin-engine jet, an Airbus A321, which left Phoenix at 6:15 a.m., was to resume its flight to Charlotte, Durrant said.

There were 141 people including crew members aboard the airplane, which had originally been scheduled to land in Charlotte at 1:12 p.m.