As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERSION/DECLARED EMERGENCY, AT FL 360 THE CABIN WARNING HORN SOUNDED. VERIFIED LOSS OF CABIN PRESSURE. ACCOMPLISHED EMERGENCY DESCENT CHECKLIST, DECLARED EMERGENCY. INSPECTED AIRCRAFT FOUND AFT CARGO DOOR SEAL TORN AND PARTIALLY OUT OF TRACK. REMOVED AND REPLACED DOOR SEAL PER MM.