LOS ANGELES (June 22) - Paris Hilton will be issued her get-out-of jail card on Tuesday after spending almost 3 1/2 weeks in the slammer.

The release date, announced Friday, was determined by the Los Angeles County Sheriff's Department's Inmate Reception Center. The exact hour of Hilton's release was not disclosed.

"There's no set time," said Deputy Luis Castro, adding he didn't know if any special arrangements had been made to return Hilton to her Hollywood Hills home.

The 26-year-old Hilton, who was sentenced to 45 days in jail for violating her probation in an alcohol-related reckless driving case, surrendered on June 3.

Sheriff Lee Baca released her to electronically monitored house arrest on June 7, citing an undisclosed medical condition he said made her a better candidate to serve the rest of her time at home.

Her sentencing judge, who had specifically barred Hilton from house arrest, ordered her to court the next day and returned the sobbing hotel heiress to jail.

Although her sentence was for 45 days, authorities have said all along that with time off for good behavior and because of crowded jail conditions Hilton was likely to serve only 23. Tuesday will mark the 24th day since she surrendered following an appearance at the MTV Movie Awards.

Hilton's release is scheduled for the same day Baca is to appear before the county Board of Supervisors, which is investigating whether her June 7 release amounted to preferential treatment.

The sheriff has said Hilton's celebrity focused so much attention on her case that she actually served more time than an average person would have under the same circumstances.