As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE AFT LAV WARNING ENROUTE, DIVERTED TO NEAREST AIRPORT. / RESET CB'S LISTED IN QRH 1-14 AND C/W OPS TEST OF AFT LAV SMOKE DETECTOR. IAW AMM 26-16-00-710-801-A01-PSA. OPS CHECK GOOD. NO EVIDENCE OF SMOKE OR FIRE IN LAV. ALSO VERFIED LAV FIRE EXTINGUISHER INTACT PER AMM 26-26-01-210-801-A01.