Federal officials are trying to determine how a stun gun was brought on a JetBlue flight on July 8.
A cleaning crew discovered the stun gun in a seatback pocket on Flight 1179, which had flown from Boston and arrived at 10:20 p.m. at Newark Liberty Airport.
Port Authority spokesman Steve Coleman told the Newark Star-Ledger that it is unclear who the stun gun belonged to or how it was brought on the flight, which was nearly at capacity with 96 passengers out of 100 seats.
The TSA and FBI are currently investigating the incident, according to JetBlue spokesperson Sebastian White.