Lindsay Lohan was released from jail Monday after serving 13 days behind bars and immediately began a 90-day stint in rehab.
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Lohan was released at 1:35 a.m. from the Lynwood Correctional Facility and taken directly to a treatment facility as required, Los Angeles Sheriff's Deputy Benjamin Grubb told TVGuide.com. He said he does not know where Lohan was taken.
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The actress had been serving a 90-day sentence for violating her probation from a 2007 DUI case, but served a reduced sentence due to overcrowding and good behavior. Sheriff's spokesman Steve Whitmore had said she was expected to serve 13 to 15 days.
Judge Marsha Revel originally ordered Lohan to report to an in-patient substance abuse program within 24 hours of leaving jail, but last week ordered her to report directly to rehab, Grubb said.
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Lohan is also subject to random drug testing until August 2011, when her probation ends.
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The 24-year-old has been on probation since August 2007 after pleading guilty to drug charges and no contest to three driving-related charges. She previously spent 84 minutes in jail in 2007.
In July, Lohan was found in violation of her probation after missing seven alcohol-education classes during a 27-week period.
A call to Lohan's attorney, Shawn Chapman Holley, was not immediately returned.