You know uz a junkie when you've got coke and heroin on you at LAX of all airports!

One Day at a Time actress Mackenzie Phillips was arrested at Los Angeles International Airport Wednesday for allegedly possessing heroin and cocaine.

Officers were called to Terminal 4 at 10 a.m. this morning as Phillips, 48, was being screened by the TSA. According to TMZ, police discovered baggies and balloons believed to contain heroin and cocaine.

The actress has a history with drug abuse. She was fired from sitcom One Day at a Time 26 years ago because of her addiction.

As a kid, she says she prepared joints for her dad, John Phillips, the founder of the band, the Mamas and the Papas.

"I grew up in mansions, but everything was dirty and broken," she told USA Weekend magazine in 1999. "Very little was going on inside except sex, drugs and rock and roll. "The first time I had a drink, it woke up the sleeping monster inside me," she said.

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