the investigation of 30-year-old christopher fowble began in june. x and neighbor cannot believe it. >> he has always been a quiet guy. he never bothered anybody at all. it is actually really amazing to hear that. >> police came across him in a maryland and chat room. >> a 30-year-old man knew he was talking to a 13-year-old girl. >> actually, he was chatting with a state trooper who was part of a task force. >> talking to the investigators, they will tell you that within the first five or 10 minutes of the on-line chat, there was definite explicit, graphic, an aggressive language that was obvious to the trooper that something was not right. >> during the investigation, state police down he lived in the 1800 block of barbie street. -- of darby street. when he arrived, investigators waiting for him. >> he said, hey, why don't we meet at the park at 10:00 a.m. in the morning? the other tripper went to the park, and the 30-year-old man showed up and was placed under arrest. >> he was taken to central booking. if convicted, he faces up to 10 years in pri