Lindsay Lohan is facing a police probe after allegedly assaulting a rehab staffer who confronted her after she hit up a bar during treatment.
It is not known whether Lohan had been drinking when she reportedly pushed the employee who confronted her when she returned to the Betty Ford Clinic after curfew.
Palm Desert Police are investigating the incident after "the victim desired prosecution" and will be treating it as a misdemenour.
She was not arrested and it remains to be seen whether it could affect her probation - a violation means she could go back to jail a third time.
Lohan has been in rehab since September 28 and has been ordered by a judge to remain there until January 3.
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