A Clarksville man has been sentenced to 100 years in prison for sexually abusing a child, according to KIMT. 41 year old Joshua Knutson was arrested in October and charged with four counts of second degree Sex Abuse and one count of Incest. Knutson abused the victim from 2009 until 2012. He pleaded not guilty in a non-jury trial but he judge found him guilty on all charges in June. He was sentenced to 25 years in prison for each count of Sex Abuse to be served consecutively, while a five year sentence for Incest will be served concurrently. Knutson must serve 70% of his sentence before he is eligible for parole.