Mel Gibson and Oksana Grigorieva investigations are running side by side

While both investigations are ongoing, a decision will be made on whether to file charges at the same time.

The L.A. County Sheriff’s Department has still plenty of work to do before sending the extortion case to the D.A.

Oksana Grigorieva may subpoena Robyn Gibson

In the meantime, Oksana’s lawyers are pretty unsure about Mel’s ex-wife claims that the actor was never violent during their marriage and are ready to subpoena Robyn Moore Gibson to appear before a deposition.

Mel left Robyn around the same time he got together with Oksana. Shortly after news of Mel’s divorce hit, Oksana Grigorieva became pregnant. She and Mel are also battling for custody of daughter Lucia, now nine months.

Oksana has told police that Mel once admitted hurling a TV at Robyn Gibson, and claims that she personally witnessed him hit his youngest son, Tommy.

Earlier this summer, Mel’s ex-wife, Robyn Moore Gibson, came to Mel’s defense with a sworn affidavit submitted to the court stating Mel was never once abusive to her or his kids.

“Mel never engaged in physical abuse of any kind toward me before, during, or after our marriage,” Robyn reportedly told the judge overseeing the case.

Considering the way their marriage ended and the leak of Mel’s phone meltdowns, Robyn’s support was surprising, leading some to question her motivation.

[poll id=”17″]