Lindsay Lohan has checked out of the exclusive Cirque Lodge Treatment Center in Utah, where she has been since August, multiple sources confirm to PEOPLE.

Her treatment there began in the weeks following her early morning July 24 arrest in Santa Monica, Calif., on suspicion of drunken driving after a brief car chase.

At the police station, Lohan, 21, was searched and a “small” amount of cocaine was found in her pocket, said Santa Monica police spokesman Lt. Alex Padilla.

Immediately after she was booked, her attorney said that Lohan, who had recently completed a six-week stint at Promises rehab center, had “relapsed” and was receiving “medical care.”

A month later, at the time her lawyer negotiated a plea deal for Lohan in her DUI cases, the actress issued a statement in which she accepted responsibility for her actions and said she suffers from drug and alcohol addiction.

“It is clear to me that my life has become completely unmanageable because I am addicted to alcohol and drugs,” her statement said.

During her time at the Cirque Lodge, Lohan was spotted taking bicycling and whitewater-rafting excursions. During the first week of September, she also got a visit from her father, Michael Lohan, which ended their three-and-a-half year estrangement.

Of Lindsay’s reunion with her father, Lohan’s mom, Dina, told PEOPLE: “It can only help her recovery. It’s time to mend.”

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