As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DETECTED A RISE IN CABIN ALTITUDE THAT WAS NOT CONSIDERED NORMAL. MADE A PRECAUTIONARY DESCENT AND PERFORMED THE CABIN PRESSURE LOW CHECKLIST. LANDED AIRCRAFT AT INTENDED DESTINATION WITHOUT INCIDENT. FOUND A/C DISTRIBUTION DUCT FORWARD OF APU DISCONNECTED. RECONNECTED DUCT.