As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT LAVATORY LEFT SMOKE ALARM ACTIVATED IN FLIGHT, CREW SMELLED AN ODOR AND A HAZE OBSERVED BY FA. NOTICED HAZE OF SMOKE AT THE CIELING OF THE LEFT AFT LAVATORY WALL. INDICATED THAT THE ODOR WAS STRONGEST WHERE THE FLIGHT ATTENDANT SEATS ATTTACH TO THE LAVATORY WALL AREA.