The Brief Ventura County Sheriff's deputies arrested 40-year-old Chad Nelson after he allegedly attacked his 80-year-old stepfather with a 10-inch kitchen butcher knife following a family discussion. Are you or someone you know a recent survivor of domestic violence? VENTURA COUNTY, Calif. – An Oak Park man is in custody following a violent domestic incident Thursday evening where he allegedly assaulted his 80-year-old stepfather with a kitchen knife inside their home. Nelson was arrested and booked into the Ventura County Pre-Trial Detention Facility. In a statement following the arrest, the Ventura County Sheriff’s Office emphasized the gravity of elder abuse:"The Ventura County Sheriff’s Office reminds the public that domestic violence can affect victims of any age.