Also responding to the scene was a tracking dog and the Major Crimes Unit from the Port Huron Police Department.
"The K-9 tracked the scent from the front of the store to Koehn Road, just to the north of the BP where the scent went cold," the sheriff's department stated.
"It's believed the suspect had a car waiting for him at that location."
The clerk was not harmed in the incident. Public Information Officer Steve Campau said he couldn't comment on whether there were other employees or customers in the store at the time of the robbery or whether any video surveillance was in use. Campau said there was little information on the type of gun used in the robbery, except to say it was a handgun and that the robber clearly showed it to the clerk.
The robbery remains under investigation by the Major Crimes Unit.
Anyone with information regarding this or any other crime is asked to call the CAPTURE hotline at (810) 987-6688.
Maria Brown joined the Tri-City Times staff in 2003, the same year she earned a bachelor's degree in English from Calvin College. Born and raised in Imlay City, she now resides north of Capac where she enjoys working on the farm, gardening and reading.