The son of actor Ryan O’Neal has been sentenced to 16 months in prison for his involvement in a drug-fuelled, head-on car crash that injured another driver.

The son of actor Ryan O’Neal has admitted driving under the influence of drugs following a head-on crash that injured another motorist.

Actor Ryan O'Neal was arrested at his Malibu, California home and booked on charges of assault with a deadly weapon and negligent discharge of a firearm after a fight with his son Griffin on Saturday night.