As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 3148 - RIC-LGA - AT CRUISE FL23, NR 1 ENGINE FLAME OUT. RIGHT AFTER A BANG NOISE WAS HEARD BY THE CAPTAIN, EICAS SHOWED NR 1 ENGINE SHUTTING ITSELF DOWN, THEN RECEIVED -ENG 1 OUT- MESSAGE FOLLOWED BY A SLIGHT EXHAUST SMELL. DECLARED AN EMERGENCY AND LANDED SAFELY. F/O RAN CHECKLIST AND ATTEMPTED A RESTART OFF THE APU WITH NO SUCCESS. REMOVED AND REPLACED NR 1 ENGINE.