As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RED BAGGAGE SMOKE CAS MESSAGE ILLUMINATED 2 MINUTES AFTER TAKEOFF. ACCOMPLISHED CHECKLIST, RETURNED FOR LANDING. NO INDICATIONS OF FIRE OR SMOKE IN BAGGAGE COMPARTMENT AFTER LANDING. R & R BAGGAGE SMOKE DETECTOR, OPS CHECKED GOOD IAW MM 26-14-00.