As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ENGINE SHUTDOWN WE RECEIVED A FIRE WARNING IN THE LOWER FORWARD CARGO COMPARTMENT. FIRED THE AGENT. THERE WAS NO EVIDENCE OF A FIRE/SMOKE IN THE FWD LOWER COMPARTMENT. THERE WAS A OVERVOLTAGE MSG IN THE EPCU CURRENT FAULTS. FIREX DISCHARGE SQUIB MPN: 876296-3 CPN: 0028922.