What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Fire erupted in the lavatory inflight. Flight attendants used halon fire extinguishers. Flight diverted into msn. Fbi and atf involved. Atf took ash samples from lavatory. Atf and carrier continue to investigate, a final determination has not been made. The lavatory extinguisher did not discharge because of the location of the fire in the trash can and the fire did not generate enough heat. The smoke level was not intense enough to activate the lav smoke alarm. The poi and chdo have been make aware of this situation and they are doing follow up action.
As the FAA filed it
(-23) FIRE ERUPTED IN THE LAVATORY INFLIGHT. FLIGHT ATTENDANTS USED HALON FIRE EXTINGUISHERS. FLIGHT DIVERTED INTO MSN. FBI AND ATF INVOLVED. ATF TOOK ASH SAMPLES FROM LAVATORY. ATF AND CARRIER CONTINUE TO INVESTIGATE, A FINAL DETERMINATION HAS NOT BEEN MADE. THE LAVATORY EXTINGUISHER DID NOT DISCHARGE BECAUSE OF THE LOCATION OF THE FIRE IN THE TRASH CAN AND THE FIRE DID NOT GENERATE ENOUGH HEAT. THE SMOKE LEVEL WAS NOT INTENSE ENOUGH TO ACTIVATE THE LAV SMOKE ALARM. THE POI AND CHDO HAVE BEEN MAKE AWARE OF THIS SITUATION AND THEY ARE DOING FOLLOW UP ACTION.