The 48-year-old Phillips was heading to New York when she failed to pass a security screening and a secondary search turned up a small amount of cocaine and heroin in her possession, he said.
Phillips is the daughter of John Phillips, the late leader of the singing group the Mamas and the Papas. She has struggled with drug addiction in the past and was fired from "One Day At a Time," which ran from 1975 to 1984, for drug-related causes.
She went on to star in the Disney Channel series "So Weird" and has made intermittent TV appearances in recent years.
