A man suspected of starting several fires in Henry Cowell state park pleaded not guilty yesterday (Tuesday). The fires were started along the San Lorenzo River, July 11th. When it was determined the fires were arson, check points were set up at key points in the park. 35-year-old Osman Wounus Chaudhry was arrested at one of those check points. He will be back in court in early August to determine if there is enough evidence to go to trial.