TULSA, Oklahoma - Tulsa police say a gas station clerk was threatened with a knife and robbed overnight. Police say a man entered the Shell Food Mart station near Interstate 244 and Utica just before 11 p.m. Friday with his shirt covering his face.

He then held up a knife and demanded money from the clerk.

A police K-9 was sent to the area to track the man, but they were not able to find him.

The clerk was not injured in the incident.

If you know anything that can help Tulsa Police, call Crime Stoppers at 918-596-COPS.