As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - CARGO DETECTION AIR STATUS MESSAGE IN FLIGHT. LANDED DEN WITHOUT INCIDENT. FOUND BAGS IN AFT COMPARTMENT STACKED TO CEILING IMPEDING AIR FLOW TO DETECTORS. REALIGNED BAGS AND TESTED CARGO FIRE DETECTORS. SYSTEM GROUND CHECKED NORMAL OPERATION.