Police are seeking two suspects after Tim Hortons on Paris Road in Brantford was robbed at knifepoint shortly after midnight on Thursday.
Police say a man and a woman entered the business and demanded money as the woman held a knife in her hand.
The pair left the store on foot with an undisclosed amount of money. No one was injured during the robbery.
The Waterloo Regional Police canine unit was called in for assistance in tracking the suspects.
Detectives are continuing their investigation by interviewing witnesses and reviewing surveillance video.
The male suspect is described as 5'9" tall with a slim build. He was wearing black clothing and a black balaclava.
The female suspect is described as 5'4", weighing about 120 pounds. She was wearing a blue hoodie during the incident.
Anyone with information about the robbery is asked to contact Sgt. Scott Williams at 519-756-0113 ext. 2271.