A man who robbed a Thunder Bay Robin's Donuts store at knifepoint is being sought by police. 

Thunder Bay Police are investigating a robbery that happened at the donut store location at May and Arthur Streets about 3 a.m. Thursday.

A man with a scarf wrapped around his face entered the store while brandishing a knife. He made off with an undisclosed amount of cash and was last seen heading west on Arthur Street.

No one was injured in the incident, but police are asking anyone with information about the suspect to call Thunder Bay Police at (807) 684-1200 or Crime Stoppers at (807) 623-8477.

Tips can also be sent anonymously at www.tipsubmit.com.