The girl had just gotten off a Diversey Avenue bus near the 2800 block of North Whipple street and was walking home when she noticed a man following her, the Chicago Tribune reported. The man grabbed her as she ran up the stairs to her home, threw her to the ground and began to undress her.
Startled when Scooby and Zamora approached them, the attacker ran into an alley at George Street where he was corner by the team until police arrived.
Police charged 28-year-old Larry Smith with criminal sexual assault. Link -via Buzzfeed, where you can see more pictures of Scooby.