Police are investigating an aggravated robbery at a Woolworths Petrol Station in Salisbury this afternoon. Just before 3.30pm, a man armed with a knife entered the Salisbury petrol station, threatened staff and demanded money. The suspect fled empty handed, last seen running down James Lane. No one was physically injured during the robbery. The suspect is described as a man in his 20’s, with a tanned complextion, 160cm tall, medium build, wearing a dark cap, grey hooded jumper with yellow writing and dark sunglasses. – See more at: http://www.sapolicenews.com.au/more-news/18362-service-station-robbery-salisbury.html#sthash.1XIe6eNI.dpuf