violated. i feel shy, talking about this. reporter: you can still see what the policeman did. look here on my neck, it s purpleish. that is why i am covering it. he forced himself on me. reporter: a fight broke out with another protester, drawing away hannah s attacker. hannah and alice could hear screams and they believe a woman was raped in an interrogation room. hannah sketched out the lease station as she remembers it. she gets 70 or 80 women and men were in the main hall that accessed for private interrogation rooms. it was in these interrogation rooms, she says, that she was assaulted, and others were raped. cnn was able to locate the police station through hannah discussion, eyewitness corroboration, and geolocation using key landmarks. it s in the islam about neighborhood. based on this testimony and speaking to a number of sources, a pattern of