Violet Kowal Claims Possession of Mel Gibson Text Messages, Says He Wanted Her to "Disappear"

It looks like Oksana Grigorieva may not have been the only Mel Gibson mistress to receive incriminating text messages from the insane actor in January.

Violet Kowal, who claims to have been Gibson's mistress while he was nailing Oksana (he is still technically married to wife Robyn), says he texted her too.

The significance of said text messages?

Kowal, an alleged Polish porn star, says she was told by Mel's bodyguard to keep her mouth shut about the January 6 altercation between Oksana and Mel.

This is according to sources who have been in touch with Violet Kowal, who claims she was communicating with Gibson about that very fight with Oksana.

Violet Kowal: Mel Gibson's alleged side piece on the side.

In the days following - January 7-9 - Kowal claims she was contacted by one of Mel's bodyguards, telling her she wasn't allowed to discuss the incident.

Moreover, he suggested she "disappear" for a price.

Kowal, who recently lawyered up (she is repped by Gloria Allred, of course) has phone records and text messages from Mel to prove all of this happened.

Also, Kowal claims to have an email she received recently from the L.A. County Department of Children and Family Services, the Sensitive Case Unit.

That office informed her they wanted to speak with her, presumably in regard to Mel and Oksana's custody fight over eight-month-old daughter Lucia.

Kowal has not met with DCFS ... yet.