A court-ordered drug test which was carried out last week showed the Mean Girls star had the Class A stimulant in her system, according to reports. The reports also allege that Lindsay, 24, failed more than one test.
A judge previously warned the troubled star that a failed test would result in 30 days behind bars.
But rather than lay low and wait for a call from her lawyer, Lindsay is making the most of her freedom now before she's sent back to jail. Friday night saw her out all night with two male friends in LA.
But after the story broke in the press, Lindsay took to Twitter to admit her mistake:
“Regretably, I did, in fact, fail my most recent drug test. Substance abuse is a disease which unfortunately doesn’t go away overnight. I am working hard to overcome it and am taking positive steps forward every day.
“I am testing every single day and doing what I must do to prevent any mishaps in the future. This was certainly a setback for me but I am taking responsibility for my actions and I’m prepared to face the consequences.”
Linsdsay was released from rehab last month after serving almost two weeks in jail for violating her probation in a Driving Under The Influence case.
The star had originally been ordered to complete a three-month rehab programme at the UCLA Neuropsychiatric Hospital, but was sent home after just 23 days when doctors deemed the treatment to be unnecessarily long.
Following her early release, Judge Elden Fox ordered Lindsay to submit to random tests twice a week and take part in psychotherapy sessions for at least four days a week.
LA District Attorney spokeswoman Sandi Gibbons told TMZ that the office had not been “officially notified” of the test results.
Check out Lindsay's latest tweets!