Mel Gibson's Baby Daughter BRUISED In Post-Fight Photos

When Mel Gibson hit his ex, Oksana Grigorieva, during a January 6 fight, he also bruised their baby daughter Lucia, reports.

Photos of Lucia with a bruise on her chin are part of Oksana's sealed declaration to the court, a source tells Radar.

Mel has admitted on tape to hitting Oksana while she was holding Lucia, then only two months old. Oksana claims he knocked out her teeth and hit the child in the process.

"What kind of a man is that who would hit a woman when she is holding a child in her hands, hitting her twice in the face? What kind of a man is that?" Oksana asks on tape.

Mel's response: "You know what? You f**cking deserved it."

Mel and Oksana are due in family court Thursday for a custody hearing.