Johnson's trial has been set for June 23rd.
EAU CLAIRE, Wis. (WEAU)-- An Eau Claire man charged with sexually assaulting a 15-year-old girl changed his plea in Eau Claire County court Friday.
48-year-old Larry Johnson pleaded not guilty due to mental disease or defect.
Last September, investigators say Johnson admitted to sexually assaulting the girl for years. According to the criminal complaint, police found out the 15-year-old girl delivered a baby in her home. It was later determined the baby died from being suffocated. The complaint says he told investigators he was likely the father of that baby.