As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI IN, THE NR 2 ENGINE FIRE WARNING ANNUNCIATED. THE CREW SHUT DOWN THE ENGINE AND DISCHARGED THE LT FIRE BOTTLE FOR NR 2 ENGINE. THE FIRE WARNING CEASED. NO OTHER ABNORMAL ENGINE INDICATIONS WERE OBSERVED. MAINTENANCE INSPECTION FOUND EVIDENCE OF A FIRE AND THE ENGINE WAS REPLACED.