Oksana:

I Didn't Leak the

Mel Gibson Tape

7/6/2010 11:15 AM PDT BY TMZ STAFF
Oksana Grigorieva denied under oath that she's the source of the leaked Mel Gibson tape, TMZ has learned.

070610_oksana_tmz
Mel's lawyer, Stephen Kolodny, took Oksana's deposition Friday.  Although it was secret, TMZ has learned Oksana was asked squarely if she leaked the tape -- which she was prohibited from doing by the judge in the custody case.

We're told she emphatically denied being the source of the leak.