. >> reporter: that was mutan's girlfriend as she asked to conceal her identity. she says she doesn't believe the charges her boyfriend is facing. today mutan's friend and family came to support him at his first court appearance. mutan is said to be connected to several assaults. >> his mother raised him to the best she could. when your kid leaves home, you don't know what your kid is going to do. but he's not proven guilty. it's not for the police to say guilty. >> reporter: tom walker says he's known mutan sie birth and is shocked to hear that the 22-year-old is facing two counts of rape, . >> he told me that he doesn't understand what the warrant is for and he hasn't done anything so he's pettily fine with turning himself in. >> reporter: although mutan was arrested on tuesday, he wasn't formally charged with rape until friday. this after victims identified him and dna results connected mutan to one of the apartments. >> but there has been some findings by the lab concerning dna. >> if he did it, he did it. we're not here to make up excuses. >> reporter: mutan

the suspect is 22-year-old antonio andre mutan. tonight we're learning much more about how he was caught. rita williams is live in martinez tonight with more on our top story. rita? >> reporter: heather just a couple of hours ago here at the costa county sheriff's department, investigators announced they had arrested 22- year-old antonio