Actor Ryan O'Neal and his son Redmond were arrested this morning after probation authorities said they found drugs at the Love Story star's home in Malibu, California.

Investigators suspect both men had methamphetamine, but the substances still need to be tested, said Los Angeles County Sheriff 's spokesman Steve Whitmore.

Police and probation officers went to O'Neal's home for a routine check on his son, who is serving three years probation after pleading guilty in June to drug possession charges.

Mr Whitmore said in addition to drugs that deputies suspect belong to Redmond, narcotics were found in his father's living area.

Both men were released after posting $10,000 bail and could be charged with possessing drugs. Ryan O'Neal, 67, was nominated for a best actor Oscar for Love Story. Redmond, 23, is his son from a relationship with actress Farrah Fawcett, star of the original Charlie's Angels series. O'Neal had two children with his first wife, Joanna Moore - son Griffin and daughter Tatum, both actors. Tatum co-starred with her father in the 1973 movie Paper Moon, for which she won a best supporting actress Oscar at the age of 10

The youngest actress to win an Oscar, she now has a recurring role on US TV series Rescue Me. She pleaded guilty in July to disorderly conduct in connection with an arrest on suspicion of cocaine possession in New York. Ryan O'Neal was arrested last February on suspicion of assaulting son Griffin, but charges were never filed.