Western Adelaide Police are currently searching the Ferryden Park area after a man robbed the Ferryden Park Post Office a short time ago. Just before 11am, a man wearing a balaclava and armed with knife threatened staff and customers at the Post Office on Ridley Grove, fleeing with cash in a waiting white Nissan driven by a second man. The main suspect is described as about 175cms, thin build, wearing a dark coloured top and blue jeans. – See more at: http://www.sapolicenews.com.au/more-news/17786-armed-robbery-ferryden-park.html#sthash.YwF5oJ6q.dpuf