Los Angeles, Oct 1 (IANS) A Los Angeles court judge has ordered Hollywood star Mel Gibson to quadruple child support payments to his ex-girlfriend Oksana Grigorieva.

The couple is involved in a bitter custody battle over their 11-month-old daughter Lucia.

The Russian singer went to court in August to demand an increase in child support payments by the ‘Lethal Weapon’ star for Lucia, with her lawyers arguing that $5,000-a-month installments are not enough to cover her expenses.

Judge Scott Gordon, who is overseeing the case, has agreed to the demand and issued an order to Gibson to increase the payments to $20,000-a-month, imdb.com reported.