Lindsay Lohan isn't the only one authorities are investigating over a late night spat with a rehab worker.
Experts say the facility where she is being treated and its former employee will also receive some scrutiny.
A spokesman for the California Department of Public Health confirmed the agency was conducting an investigation at Betty Ford, but declined to release details. Spokesman Ralph Montano said this week that details may be released later, but he could not confirm that the inquiry was related to Lindsay or an interview by the fired employee.
Detectives are investigating Li-Lo over allegations of misdemeanour battery at the request of a Betty Ford Clinic worker who was involved in an incident with the Mean Girls star on December 12.
Lindsay's attorney, Shawn Chapman Holley, has declined to comment on the incident, but said it was the actress who called police.
The worker later conducted an on-camera interview with celebrity website TMZ, which also posted an email the worker apparently sent to supervisors after the fight. The woman, identified by TMZ as Dawn Holland, was promptly fired by Betty Ford.
Los Angeles Superior Court Judge Elden Fox had warned Lindsay, 24, to remain out of trouble and not refuse any drug tests when he ordered the actress to remain at Betty Ford until January 3.
If the judge suspects she violated her probation, he could convene a hearing where Holland would likely be called to testify about the incident.