As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED SMOKE IN THE CABIN AT AROUND 11000 FEET. DECLARED AN EMERGENCY, RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND PERFORMED OPS CHECK OF ALL SYSTEMS, OPS CHECKED GOOD. FOUND NO EVIDENCE OF BURNT WIRES OR COMPONENTS. THE AIRCRAFT WAS RELEASED FOR SERVICE.