As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRE WARNING/IFSD DURING CRUISE, THE CREW OBSERVED A FIRE INDICATION ON THE ENGINE. THEY ELECTED TO SHUT IT DOWN BEFORE RETURNING TO THE POINT OF ORIGIN, WHERE AN UNEVENTFUL SINGLE ENGINE LANDING WAS ACCOMPLISHED. THE ENGINE FIRE LOOP IS BEING REPLACED.