Whittle/Splash News Online
03/25/2009 at 01:00 PM EDT
Redmond O'Neal pleaded not guilty to drug charges Wednesday in a Malibu, Calif., court.
The troubled son of actor Ryan O'Neal is facing a felony count of methamphetamine possession, two misdemeanor counts of possession of drug
paraphernalia and one misdemeanor count of illegal possession of pepper spray.
Redmond, 24, was arrested
Sept. 17 along with his father, Ryan, 67, in the actor's Malibu home during a probation sweep.
The younger O'Neal has a history of drug abuse and entered rehab in 2004 for heroin use. Last June, he pleaded guilty to drug possession and one misdemeanor DUI charge.
Last October, Redmond told an L.A. judge
that he was enrolling in drug treatment and was "doing a lot better" after completing a detox program.
On Jan. 9, his father pleaded guilty
to felony drug possession and agreed to enter an 18-month drug diversion program.
Redmond's next hearing is set for May 14.