As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRST CLASS LAVATORY SMOKE ALARM SOUNDED DURING APPROACH. HOT WATER HEATER FELT WARM TO TOUCH. A LIGHT SMOKEY HAZE WAS NOTICED IN CEILING AREA WHEN F/A OPENED THE LAVATORY DOOR. PAX E CIG MAY HAVE BEEN USED IN THE LAVATORY, HOWEVER NOT CONFIRMED. CHECKED LAVATORY LIGHTS, WATER HEATER, FLUSH SYSTEM, AND SMOKE DETECTOR. ALL OPERATE NORMAL. VERBAL F/A SUSPECTED PAX SMOKING IN LAV. ACFT OK FOR SERVICE.