Stun Gun Found On Boston Plane After Arrival

07/11/2011 09:40 am ET | Updated Sep 10, 2011

NEWARK, N.J. -- Authorities are trying to determine how a stun gun got aboard a JetBlue plane that landed at New Jersey's Newark Liberty International Airport.

The crew was cleaning up around 10:20 p.m. Friday after the flight arrived from Boston and found the stun gun tucked into the back of a seat.

Port Authority spokesman Steve Coleman says it's not clear who the weapon belonged to or how it got on the plane. Coleman says there's no indication the weapon had been fired.

Port Authority police turned the stun gun over to the Transportation Security Administration. The agency is responsible for screening those who boarded the flight.

Coleman says the FBI is also involved in the investigation.

A spokesman at Boston's Logan Airport referred questions to the FBI and TSA.