LA County Sheriff's Department/AP
11/15/2007 at 05:45 PM EST
reported to the Lynwood jail on Thursday to serve her minimum 24-hour sentence as part of her plea deal in her two DUI cases – and checked out 84 minutes later.
According to the sheriff's department Web site, the actress turned herself in at 10:30 a.m., and was released at 11:54 a.m. The jail has a long-standing policy of releasing non-violent offenders early due to overcrowding.
"Ms. Lohan was cooperative," sheriff's spokesman Steve Whitmore tells PEOPLE. "She was fingerprinted, photographed, and put in a holding cell, but was let go due to our early release policy."
first reported the story.
On Monday, Lohan began her court-ordered community service
at an American Red Cross blood services facility in an L.A. suburb.
Although the actress, 21, was sentenced in August to four days in jail for her second DUI conviction, prosecutors agreed she could serve 10 days of community service in lieu of two days behind bars.
Lohan was also given credit for one day served from her July arrest, leaving only 24 hours she had to serve.
The actress – who recently finished a lengthy rehab stint at the Cirque Lodge in Utah – was also placed on three years probation and must complete an 18-month alcohol program.
Her lawyer did not immediately respond to requests for comment.