As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CARGO LIGHT ILLUMINATED DURING FLIGHT. THERE WAS NO LOSS OF PRESSURIZATION. CREW DESCENDED BELOW FL100 AS A PRECAUTION AND LANDED IN CLE WITHOUT FURTHER COMPLICATIONS. CAPTAIN INSTRUCTED CLE GROUND PERSONNEL NOT TO TOUCH THE CARGO DOOR UNTIL HE VISUALLY INSPECTS IT. DURING HIS POST FLIGHT CHECK, HE NOTED THAT THE CARGO DOOR HANDLE WAS FULLY EXTENDED.