As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4267 THE CREW REPORTED THE EMERGENCY LIGHTS COME ON WHEN SHUTTING DOWN AIRCRAFT WITH SWITCH IN OFF POSITION. EXIT SIGNS AND DOME LIGHTS ON. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED NR 1 BATTERY POWER SUPPLY IAW EMB-145 MM 33-50-04. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.