As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND SEVERAL EMERGENCY LIGHTS ON THE CAPTAIN SIDE ILLUMINATED FOR SEVERAL MINUTES. COULD NOT BE SWITCHED OFF FROM EITHER SWITCH. THE AIRCRAFT WAS REMOVED FROM SERVICE. THE EMERGENCY LIGHTS OPERATIONAL CHECK WAS NORMAL IAW CRJ 700 AMM 33-51-00. COULD NOT DUPLICATE. THE AIRCRAFT WAS RETURNED TO SERVICE.