Lindsay Lohan Lindsay Lohan

Police want Lindsay Lohan charged with battery after determining that she violated her probation in her altercation with a Betty Ford Center staffer last month.

The Riverside County Sheriff's Department said in a news release that Lohan "violated several aspects of her probation, including the battery" during the Dec. 12 incident and will submit its investigation to the District Attorney's office later this week.

Los Angeles Superior Court Judge Elden Fox told Lohan in October that she will face a mandatory 180-day jail sentence if she violates probation.

Lindsay Lohan checks out of rehab

Last month, Riverside County sheriff's detectives said Lohan, 24, was being investigated for an alleged misdemeanor battery charge during an early morning dispute witih Dawn Holland. Holland was fired after giving an interview about the incident to TMZ, in which she accused Lohan of pushing her and grabbing a phone out of her hand, injuring her wrist. Holland later dropped the charges against Lohan, but police continued the investigation.

"The important, yet limited, investigatory role of the police to gather facts and collect evidence is well-established," Shawn Chapman Holley, Lohan's lawyer, told TVGuide.com in a statement. "The fact that the Palm Desert Police Department went outside this limited role to issue a press statement expressing its opinion about what should happen in Ms. Lohan's case is highly unusual and deeply troubling."

Lohan entered the Betty Ford clinic on Sept. 27, three days after she violated her probation with a failed drug test. Fox allowed the actress to stay in rehab instead of going to jail for the violation stemming from a 2007 DUI case.

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Lohan checked out of the Betty Ford clinic on Monday. She's due back in court Feb. 25 and is subject to random drug testing from now until her court date.