As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAV E SMOKE DETECTOR WENT OFF PER FAS NO PAX IN LAV COULD NOT FIND FAILURE WITH AFFECTED SMOKE DETECTOR, SMOKE DETECTOR PASSES SELF TEST AND SMOKE TEST IAW AMM 26-14-00/501. NO SMOKE ODOR PRESENT, VERIFIED NO TAMPERING WITH SMOKE DETECTOR. OK TO CONTINUE NO NOTICEABLE RECENT HISTORY NOTED.