A hearing is set Thursday to determine if actress Lindsay Lohan violated her probation in a 2007 misdemeanor DUI case, according to the District Attorney's Office.
"We are unclear as to the violation because we have not gotten any paperwork,'' Sandi Gibbons of the District Attorney's Office said.
Lohan will be required to attend the 10 a.m. hearing at the Airport Branch Courthouse in Los Angeles, according to Gibbons.
When asked whether the actress had been summoned to court, Lohan publicist Steve Honig told City News Service, "I'm neither going to confirm nor deny.''
The 24-year-old star of such movies as "Mean Girls'' and "Freaky Friday'' is on house arrest after being sentenced April 22 to 120 days in jail and 480 hours of community service for violating her probation in the misdemeanor DUI case.
Los Angeles Superior Court Judge Stephanie Sautner ruled then that there was a "preponderance of evidence'' that Lohan had violated her probation by walking out of a Venice jewelry store as she wore a necklace priced at $2,500 that she had tried on in the store.
The necklace was turned over to police on Jan. 27 by Lohan's assistant after police obtained a search warrant for Lohan's home and news of the warrant was leaked to the media.
Lohan pleaded no contest May 11 through her attorney to a misdemeanor grand theft charge involving the necklace. She was placed on three years probation and ordered to complete the jail time and community service that had been imposed just under three weeks earlier.
On May 26, she was booked at the Century Regional Detention Facility in Lynwood and immediately released to serve her sentence on home detention.
The misdemeanor DUI case stems from a pair of DUI arrests in May 2007 and July 2007.
She spent 13 days in a Los Angeles County jail last summer for violating her probation in the DUI case by missing multiple classes in a court-ordered alcohol education program.