The Knox County Sheriff's Office is looking for a man they say robbed a Corryton business Monday afternoon.

Detectives say he robbed the Red Rhino Cash Advance on Tazewell Pike just before 1 o'clock. They say he used a knife to rob the business.

He was wearing a motorcycle helmet to cover his face during the robbery and fled on foot.

Nobody was injured.

If you have any information please call (865) 215-2243.