As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - CAPTAIN REPORTED FIRE INDICATION IN AFT CARGO COMPARTMENT. RETURNED TO MIA AND LANDED WITHOUT INCIDENT. ACCOMPLISHED BITE TEST WITH NO FAULTS NOTED. REMOVED DEBRIS FROM AFT CARGO COMPARTMENT FAN TUBING. SYSTEM GROUND CHECKED NORMAL OPERATION.