An Afghan immigrant has been arrested after an alleged sex attack on a young mother in broad daylight while she was pushing a pram with her two children in. The attack is said to have happened on the popular Donauinsel (Danube Island) in the Austrian capital of Vienna, filled with bars and restaurants. The children, aged one and two, were unharmed in the incident. The attacker, reportedly a 17 year old, managed to throw the woman to the ground and climbed on top of her but she fought back. She eventually stopped him when she bit him on the nose when he tried to kiss her, reports said. She then called police as he ran off, and using CCTV images and a sniffer dog they were able to follow him to a nearby train station where he was arrested. He was later identified by his torn coat and by his alleged victim.The alleged sex attacker is currently in investigative custody and police suspect he might be behind other attacks in recent months. They said they were arranging for the other alleged victims to see if they could identify him.