Lindsay Lohan could face court again after her alcohol ankle-monitor went off.
The monitor apparently went off after actress Lohan appeared at the MTV Movie Awards in Los Angeles on Sunday.
A court hearing on the matter has not been scheduled but Lohan’s lawyer Shawn Chapman Holley said she is looking into whether a violation may have occurred.
The actress has been on probation since August 2007 after pleading guilty to drug charges and no contest to three driving charges.
The alert could result in another appearance by Lohan before a judge whose patience has worn thin with the 'Mean Girls' actress for repeated misbehaviour during her probation.
It remained unclear why the bracelet went off but Los Angeles Superior Court judge Marsha Revel will receive a report on the alert soon.
Lohan has been required to wear an alcohol monitor since May 24, when she appeared before Judge Revel days after missing a court hearing.
She is due back in court on July 6 when the judge will decide whether Lohan, 23, violated her probation because of her missed appearance.
A violation could result in Lohan being sent to jail.
Judge Revel refused to ease Lohan’s drug and alcohol testing restrictions at the May hearing and ordered her to wear the alcohol monitor.
Deputy district attorney Danette Meyers, who is handling Lohan’s case, said she was aware of “an issue” that would come to the court’s attention, but did not have further details.
Lohan appeared at the MTV awards show on Sunday and also attended at least one of the show’s after-parties.
She covered up the ankle monitor on the show’s red carpet by wearing trousers.
Lohan has repeatedly struggled with the terms of her sentence. In October, a judge extended her probation for another year but Lohan was warned she was facing jail if she violated her probation.
The extension was the third time Lohan escaped punishment after her alcohol-education programme notified the court the actress had violated its rules.
Ms Chapman Holley said Lohan missed a hearing last month because her passport had been stolen while she was at the Cannes Film Festival.