A woman who allegedly had an affair with Mel Gibson during Oksana Grigorieva's pregnancy, has come forward with audio tapes of a different kind.

Violet Kowal, a Polish porn star, recorded a conversation of Grigorieva's bodyguard allegedly offering Kowal money and incentives to testify against the Oscar-winning director, RadarOnline.com reports.

Kowal then took the tapes and played them for Gibson's lawyers.

"At that meeting, Violet played Mel's lawyers a series of taped audio recordings which show how a bodyguard, who identified himself as working for Oksana, made advances to them," a source said.