As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DEPARTURE NR 1 ENGINE HAD LOUD BANG AND VIBRATION. NR 1 ENG TO IDLE AND THEN OIL QUANTITY WENT TO ZERO, NO N1. PERFORMED PHASE 1'S AND QRH PROCEDURE. RETURN TO MEM FOR ENGINE OUT LANDING. MX MEM, INSPECTED NR 1 ENGINE. FOUND OIL PUDDLED IN EXHAUST AREA. NO OIL QTY ON NR 1 ENGINE. CREW BLEW NR 1 ENGINE FIRE BOTTLE. REMOVED AND REPLACED ENGINE PER WORK CARDS 71T0101-1 AND 71T0701-1 RUN AND OPS CHECKS GOOD.