As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. DURING DESCENT, THE FORWARD LAVATORY SMOKE ALARM ALERTED WITH NO SIGN OF ACTUAL SMOKE. SMOKE ALARM ACCESS PANEL LATCH IS BROKEN. REMOVED AND REPLACED LAVATORY A SMOKE ALARM PANEL LATCH PER AMM 25-41-49. OPERATIONAL CHECK GOOD.