What was found
IAH - FLIGHT 3089 - THE CREW REPORTED THAT ON ARRIVAL TO IAH HAD A BAGGAGE SMOKE WARNING IN EICAS, AND A BAGGAGE WARNING LIGHT ON. THE CREW DISCHARGED THE CARGO FIRE BOTTLES AS A PRECAUTION, AND THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT, AND REMOVED AND REPLACED THE FORWARD CARGO COMPARTMENT SMOKE DETECTOR & FIRE BOTTLES, OPERATIONALLY CHECKED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.