As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GNDED. DURING TAKEOFF ROLL THE AFT CARGO DOOR LIGHT ILLUMINATED. THE FLIGHT CREW ABORTED THE TAKEOFF AT 32 KNOTS & RETURNED TO THE GATE. FOUND THE AFT CARGO DOOR HANDLE AJAR & CLOSED THE HANDLE & VERIFIED THAT IT INDICATED CLOSED & LOCKED.