Major County Sheriff Steven Randolph was arrested on Monday. The OSBI says Randolph was arrested after an investigation into allegations he assaulted his daughter's boyfriend last May. The OSBI says Randolph pulled his sheriff's vehicle in front of Carlos Aguilar's pickup truck, grabbed him by the collar and threatened to kill him. Randolph then pointed his gun toward the road and fired a shot. Randolph was booked into the Blaine County jail on three misdemeanor counts including assault and battery, malicious injury to property, and reckless conduct with a firearm.