Oksana Grigorieva's lawyers have finally snagged a sit-down interview with Mel Gibson, and the all-important deposition will take place next Monday, Breaking Celebrity News has learned.

But lawyers for the Russian musician are almost certain to hear stone-cold silence when the Lethal Weapon star is grilled about allegations he punched his ex-lover while she held their infant daughter Lucia.

"Mel's team has agreed to have him sit for the deposition on November 1," a source connected to the case exclusively told Breaking Celebrity News.

"But Mel will decline to discuss the alleged assault on Oksana, citing his Fifth Amendment right against self-i