As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FIRE WARNING INDICATION - FLT 0728 - AFTER ARRIVING AT THE GATE IN ORD AS ENGINES WERE BEING SHUTDOWN AND THE CARGO DOORS OPENED, RECEIVED A ECAM FIRE WARNING INDICATION FOR THE FORWARD CARGO COMPARTMENT. DISCHARGED THE FORWARD CARGO FIRE BOTTLE PER ECAM INSTRUCTION. MAINTENANCE TROUBLESHOT THE CARGO FIRE WARNING SYSTEM AND FOUND NO DEFECTS.