Adair County Sheriff Jeff Vandewater, Thursday, reported that Greenfield Police had arrested 34-year old Derik Wayne Bud Pickrell, of Fontanelle. He was taken into custody Monday afternoon in  Greenfield, for Assault with Injury, with regard to an incident with his mother. Pickrell was being held in the Adair County Jail on a $1,000 cash or surety bond.