Four youths have been arrested after an aggravated robbery at Welland. At about 7.20pm, police will allege that the group entered a liquor store on Port Road. One male distracted staff, while another male stole a bottle of alcohol. When staff confronted the group, the male with the bottle allegedly threatened them with a knife. Patrols quickly descended on the scene, and with the assistance of a police dog located the suspects nearby at the West Croydon railway station. A 15-year-old boy from Modbury and a 14-year-old boy from Port Adelaide were charged with aggravated robbery. They are expected to be refused bail. A 16-year-old boy from Semaphore Park was charged with disorderly behaviour, and a 14-year-old girl from Semaphore Park was charged with breach of bail and providing false particulars. Both were bailed to appear in court at a later date. – See more at: http://www.sapolicenews.com.au/more-news/26143-four-arrested-after-robbery-at-welland.html#sthash.9qDmNUQn.dpuf