As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - ON FLIGHT NUMBER 2312, ON TAKEOFF ROLL AT 60 KIAS, RECEIVED FUSELAGE DOOR WARNING. ABORTED TAKEOFF. FOUND AFT BAGGAGE DOOR UN-LATCHED. DOOR HANDLE POPPED OUT. CLEANED AND INSPECTED DOOR HANDLE STOWAGE LATCH. NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.