As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE AT FL 370 ENGINE SEIZED. BOTH N1 AND N2 RAPIDLY DECREASED TO ZERO. AUTOPILOT KICKED OFF AND SIGNIFICANT AILERON INPUT REQUIRED TO RETURN TO WINGS LEVEL. DIVERTED TO ORD. NO LOSS OF ENGINE OIL. NO PREVIOUS VIBRATIONS. NO WARNING OST FLIGHT CREW COULD NOT MOVE FAN IN ANY DIRECTION. NO METAL OR DEBRIS IN INLET OR EXHAUST.