Mel Gibson has officially been charged with misdemeanor battery for allegedly assaulting Oksana Grigorieva, his former girlfriend and mother to his 1-year-old daughter, Lucia. The actor-director, 55, was charged after months of investigation by sheriff's detectives into a January 2010 incident where Gibson allegedly "willfully and unlawfully" used violence against Grigorieva during a heated argument.

As previously reported, Gibson is expected to accept a plea agreement to resolve the case and is not anticipated to serve jail time.