Mel Gibson is being sued by his stepmother.

Teddy Joye Hicks Gibson - who married the actor's father Hutton Gibson in 2001 - claims Mel is responsible for their break-up after her spouse filed for divorce and kicked her out of their home in June.

According to gossip website TMZ, Teddy, 78, is suing Mel for $65,000 to cover the legal bills from both her divorce and a court order forcing him to let her into the marital home.

Earlier this month she filed for a restraining order against Mel, alleging the 'Braveheart' star had threatened her and tried to sabotage her marriage.

In legal documents, Teddy said Mel and his sister Maura have a grudge against her because she doesn't approve of controversial medical treatments they have been urging her husband to undergo for his various illnesses, and she alleged they manipulated their ailing father into filing for a divorce, something she insists her devout-Catholic spouse wouldn't usually agree to.

She also claimed 93-year-old Hutton recently penned her a love note saying: ''Our mutual love is permanent.''