Ryan O’Neal pleaded guilty on Friday to a felony drug possession charge. He was sentenced to an 18-month rehab progam.

O’Neal and his 23-year-old son Redmond were both arrested in September 2008 when authorities came to their home in Malibu for a routine check on Redmond, who was serving 3 years of probation from a previous drug charge.

Ryan pleaded guilty to one felony count of possessing methamphetamine. He must return to court for a progress report on July 10. Redmond O’Neal’s arraignment is scheduled for Feb. 20.

More pictures of the father-and-son below…

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