As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED THAT 2 HOURS FROM LANDING, INTERMITTENT LAVATORY FIRE ALARM MASTER WARNING. FLIGHT ATTENDANTS REPORTED NO CREDIBLE SIGNS OF SMOKE. MAINTENANCE ACCOMPLISHED TSM 26-17-00-810-804-A, NO SIGNS OF SMOKE PRESENT NO FAULTS PRESENT IN SMOKE WARNING REPORTS OR CLASS 3 FAULTS.