Oksana to Sheriff: Stay Away From My Personal Stuff!

10/20/2010 8:58 PM PDT

Oksana to Sheriff: Stay Away From My Personal Stuff!

TMZ has learned ... Oksana Grigorieva's lawyer will go to court tomorrow and ask a judge to tell the L.A. County Sheriff's Department ... personal information in her computer that is not related to the criminal investigation should be off-limits.

The judge in question signed a search warrant a while back, authorizing the Sheriff's Department to seize Oksana's home computer.  Thing is ... the judge didn't set any limits on what info was fair game and what was not.

We've learned Oksana's lawyer, Daniel Horowitz, has already filed legal papers and will argue tomorrow that the Sheriff's Department can look at anything related to the domestic violence and extortion investigations, including emails, photos and recordings.  But Horowitz does not want unrelated personal matters to be scrutinized.  So photos of alleged injuries -- OK.  Emails to her gynecologist -- not OK.

And this is interesting ...  We've learned the judge who signed the warrant authorizing the Sheriff to seize Oksana's computer is none other than Scott Gordon, who is presiding over her custody war with Mel Gibson.  Interesting that the Sheriff's Department went to Gordon.

Stay tuned...