The new judge overseeing Lindsay Lohan's criminal case is issuing a surprise, unspecified ruling on Tuesday, the Associated Press reports. The ruling will come one day before the prosecutor and Lohan's attorney were planning to attend a previously scheduled update hearing.

Los Angeles Superior Court spokesman Allan Parachini said Judge Eldne Fox, who replaced Judge Marsha Revel a few weeks ago, would issue the mystery ruling on Tuesday afternoon. Parachini had no additional information.

Judge Revel originally sentenced Lohan to 90 days in jail and a 90-day inpatient rehabilitation program on July 6 for violating probation on an old DUI case. She ended up serving only 14 days due to good behavior and overcrowding at the jail. She is currently in the middle of the 90-day rehab program.