As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAV SMOKE ILLUMINATED FOR APPRX 10SEC FA ATTENDANT FOUND NO SMOKE OR FUMES. NO FURTHER ISSUES PAX HAD JUST EXITED THE LAV & SAID THEY MIGHT HAVE HIT THEIR HEAD ON THE DETECTOR. IT WAS THE FWD LAV. REMOVED FROM SERVICE. C/W LAV SMOKE DETECTOR OPS CHECK GOOD REF REF AMM AMM TASK 26-14-01-700-801-A OPS TEST GOOD NO FURTHER DEFECTS NOTED. NO PARTS REPLACED. RETURNED TO SERVICE.