As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE TO KSYR AT FL230 THE LEFT ENGINE OIL PRESSURE WARNING ILLUMINATED. THE ENGINE WAS SHUTDOWN AND AN EMERGENCY WAS DECLARED. THE AIRCRAFT WAS VECTORED INTO KSYR AND AN OTHERWISE NORMAL APPROACH AND LANDING WAS MADE. CFR INSPECTED THE AIRCRAFT AND FOUND NO DAMAGE OR FIRE. MAINTENANCE TROUBLESHOT AND FOUND THE LUBE AND SCAVENGE PUMP SHAFT SHEARED. MAINTENANCE IS STILL IN WORK.