Credit: Carlos Alvarez/Getty Images

Troubled actor Mel Gibson, 55, made headlines last weak for pleading "no contest" to a misdemeanor domestic battery charge, but on Saturday the Lethal Weapon actor got some good news.

Gibson's daughter Hannah, 30, gave birth to a baby boy, a source confirms to

An observant Catholic, Gibson reportedly left his Malibu church early on Sunday to spend time with the new babe.

This is the star's third grandchild. Hannah and blues singer husband Kenny Wayne Shepherd, 33, have another son and daughter.

Hannah is the eldest of Gibson's seven children with ex-wife Robyn.