Former TV star Mackenzie Phillips, who has long battled drug addiction, has entered rehab again after she was charged with felony possession of drugs. The actress was allegedly found carrying narcotics at Los Angeles International Airport.

Phillips, 48, has been charged with two felony counts of possession of a controlled substance, heroin and cocaine, after she attempted to smuggle small bags of the two substances past security screeners on August 27. Police said she had a "small amount" of drugs packaged in balloons and plastic bags.

She also faces a misdemeanor count of unauthorized possession of a hypodermic needle or syringe.

Following her arrest, Phillips spent a night behind bars before being released on $20,000 bail. She is scheduled to be arraigned in October.

Her attorney confirmed that she has entered an unknown rehabilitation facility in an effort to get clean.

Phillips, who is the daughter of John Phillips, founder of The Mamas and the Papas pop group, appeared in George Lucas’ film “American Graffiti” when she was a teenager. She also starred in the popular sitcom “One Day At A Time,” with Valerie Bertinelli. She got fired from the sitcom twice in 1982 for drug-related reasons. Phillips has claimed to have been exposed to drugs as a child by her father and she has been into rehab several times in the past three decades.

The actress’ last role was in the Disney channel series “So Weird,” where she played a rock star mom.