B737-800
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Communication Breakdown; Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
General Maintenance Action
Aircraft
While arriving [at the gate]; Number 3 FA (Flight Attendant) called and conveyed that there's smoke and fire at row 18; left side and that he is taking the extinguisher to it. I informed the Captain and he expedited our parking as I tried to contact the Tower for ARFF assistance. The Tower frequency was congested and after a few tries I got through. Tower called ARFF and after shutdown the Captain went to the back and by that time the smoke had already dissipated.Smoke had actually originated from under row 18; right side. By the time we parked passengers sitting nearby apparently had poured water onto the electronics box that was smoking. We deplaned normally and upon inspection by Maintenance and ARFF; it was concluded that no other components of the plane were affected. A seat power box was removed and had a strong electronic burning odor.
[Report narrative contained no additional information.]
B737-800 flight crew reported that a Flight Attendant reported a fire under a passenger seat in the cabin.