Warrant issued for Lindsay Lohan's arrest

Will be held until Friday 8:30 a.m. court appearance

A judge has issued a bench warrant for Lindsay Lohan's arrest, a spokesperson at the Los Angeles Superior Court confirms to The Hollywood Reporter.

"The bench warrant was issued and held until Friday," said the spokesperson.

Lohan is due in court Friday at 8:30 a.m. after admitting she failed a drug test. The judge may order her to spend 30 more days in jail.

Wrote the "Machete" star on Twitter Friday, "Regrettably, I did in fact fail my most recent drug test and if I am asked, I am prepared to appear before judge Fox next week as a result. Substance abuse is a disease, which unfortunately doesn't go away over night. 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. I am so thankful for the support of my fans, loved ones and immediate family, who understand that i am trying hard, but also that I am a work in progress, just as anyone else. I am keeping my faith, and I am hopeful....Thank you all!!!"

Last July, Lohan was sentenced to 90 days in jail (she served 14) and 90 days in rehab (she served 22) after she violated her probation stemming from a 2007 DUI arrest.