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Mackenzie Phillips

Lisa O'Connor/ZUMAPress.com

If Mackenzie Phillips isn't truly repentant for her drug bust yesterday, then she's a better actor than the world knew.

Despite visits from several bail bondsmen, as well as stepsister Bijou Phillips and Bijou's boyfriend Danny Masterson, the former One Day At a Time star is going on her second day in  a Van Nuys jail cell on suspicion of possession of a controlled substance.

The 48-year-old actress-singer  was brought to the facility Wednesday after admitting to officers she had a "drug problem"—and was found to be holding small amounts of both cocaine and heroin while trying to get through security at Los Angeles International Airport.

"She has not posted bail," an officer at the facility told E! News.

Per standard bail bond procedures, the troubled actress need only come up with $1,000 of her $10,000 bail to get sprung.

Phillips was arrested early Wednesday at LAX after security screeners found what police have identified as small amounts of heroin and cocaine.

According to the police report, Phillips copped to her drug-taking misstep even before she was hauled away.

Airport screeners said the star seemed suspicious from the outset, per the report, "continuously moving" as employees scanned her for a second time with a wand metal detector. One official even told her to "stop moving and stand still."

But the screeners were unable to finish the search due to Phillips' inability to remain still. However, her excess energy helped hasten her downfall—her movement shifted the bag of drugs she had been hiding on her person.

"When Phillips sat down a plastic bag containing an unknown white substance later identified…as cocaine fell down her right pant leg," the police report states. It added that a small foil ball containing what proved to be heroin followed self-exposing suit.

Shortly before the drugs were in full view, per officers, Phillips "spontaneously said, 'I'm holding.' "

As officers conducted a more thorough search, Phillips reportedly became even more confessional, admitting to using heroin earlier that morning. During a strip search, an officer asked Phillips if she was diabetic after spotting "extensive" marks on her arms.

"She said, 'No, I am healthy except for my drug problem,' " the report reads.

There has been no comment from Phillips or her reps on the incident. The actress is due to appear in court Friday morning to answer to the felony charge.