Published: Jul 11, 2011 7:07 PM EDT
Updated: Jul 11, 2011 6:07 PM EDT

NEWARK, N.J. (AP) - An FBI spokesman says there's no indication that an attack was imminent using a stun gun found in a plane that landed in Newark, N.J., after a flight from Boston.

Newark FBI spokesman Bryan Travers says the investigation is focusing mostly on how the stun gun ended up on the flight.

The stun gun was found in the pocket behind a seat on a JetBlue plane around 10:20 p.m. Friday by a cleaning crew. Authorities say they gave it to the Port Authority of New York and New Jersey police, who handed it over to the Transportation Security Administration. The TSA is responsible for screening people before they board flights.

The Boston office of the FBI is heading up the investigation as to how it got onboard.

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