What was found
(CAN) DURING REVENUE FLIGHT, ENROUTE, IN CRUISE THE LOW OIL PRESSURE WARNING SOUNDED. PILOT REDUCED POWER TO IDLE AND OIL PRESSURE FELL INTO RED BAND. PILOT SHUT DOWN AND SECURED THE ENGINE. ACFT WAS DIVERTED WHERE AN UNEVENTFUL SINGLE ENGINE LANDING WAS PERFORMED. AFTER LANDING, A VISUAL INSPECTION OF THE ENGINE DID NOT REVEAL ANY EXTERNAL OIL LEAKS, AND OIL LEVEL INDICATED MINIMUM.