As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE THE FLIGHT CREW GOT A BAG SMOKE WARNING ON EICAS. FLIGHT CREW DISCHARGED THE BAGGAGE COMPARTMENT FIRE EXTINGUISHERS AND DIVERTED TO IAD. MAINTENANCE INSPECTED THE BAGGAGE COMPARTMENT AND FOUND NO EVIDENCE OF SMOKE OR FIRE. MAINTENANCE REMOVED AND REPLACED BOTH FIRE EXTINGUISHERS, CLEANED THE SMOKE DETECTORS AND CONNECTORS. SYSTEM OPS CHECKED GOOD.