As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FL 330, AFT CARGO FIRE WARNING LIGHT AND BELL ACTIVATED. BOTH FIRE BOTTLES WERE DISCHARGED. ACCOMPLISHED EMERGENCY CHECK LIST AND AIRCRAFT DIVERTED TO DENVER. AFTER LANDING, FIRE DEPARTMENT CONFIRMED NO FIRE. INSPECTED AFT CARGO AND BULK COMPT, FOUND NO SMOKE OR FIRE. FOUND NR 5 FIRE DETECTOR FAULTY. DISCONNECTED NR 5 DETECTOR, CONTINUED IN O D I. NO CARGO IN LOWER COMPARTMENTS.