UPDATE: Police have arrested a man over an aggravated robbery at a service station in Murray Bridge this morning.
About 3am Monday 24 July police were called to Swanport Road after reports a man entered a service station and threatened staff with a knife before getting away with cash and cigarettes.
Staff were not physically injured during the ordeal.
Following investigations, Murray Bridge CIB detectives arrested a 27-year-old Murray Bridge man and charged him with aggravated robbery.
He was refused police bail and will appear in the Murray Bridge Magistrates Court today, Monday 24 July.