A Mt. Vernon man has been arrested for an alleged sexual assault of a juvenile. On February 6, 2021 deputies from the Jefferson County Sheriff’s Office responded to the Rolling Meadows Trailer park in Mt. Vernon for a report of an alleged sexual assault of a minor. Deputies took protective action on scene to ensure the wellbeing of juveniles in the residence and contacted Detectives from the Sheriff’s Office and investigators from the Department of Children and Family Services to take over the investigation. An investigation led to the arrest of Anthony Knappier, 33 of Mt. Vernon, on February 10. Knappier was incarcerated in the Jefferson County Jail with bond to be set by a judge on the felony charge of Aggravated Criminal Sexual Assault.