Police believe the man behind a service station robbery at Evanston Park on October 4 also robbed a Davoren Park supermarket the following night.
The IGA on Peachey Road at Daveron Park was held up about 7.45pm on October 5 by a male described as being his in late teens or early 20’s.
It is alleged the man confronted staff with a knife at On The Run, Main North Road in Evanston Park, about 11.20pm on October 4.
He stole cash, cigarettes and iced coffee which he put into a backpack before running east along Pots Road.
Gawler police patrols and a police dog searched the area, tracking the suspect along Potts Road and a creek before losing the trail on Tingara Road.
He is described as being a Caucasian male, about 177 centimetres tall who was wearing a dark-grey hooded jacket, black tracksuit pants with a white motif on the front left pocket, a black balaclava and black sneakers with white soles and white laces.
Anyone with information about the robbery is asked to contact Crime Stoppers on 1800 333 000 or online at sa.crimestoppers.com.au