Mel Gibson faces third interview

Mel Gibson is to be interviewed by police for a third time in connection with his extortion claims against former partner Oksana Grigorieva.

The Los Angeles County Sheriff's Department is reportedly set to investigate the Braveheart star's extortion claim against his former partner Oksana Grigorieva.

The 54-year-old actor, who has been accused of domestic violence against the Russian singer, first made the claims in July, when he met with detectives to discuss how the 40-year-old beauty had tried to extort money from him.

According to gossip website TMZ, the sheriff's department is now keen to interview the star for a third time, suggesting they are taking the extortion claim seriously.

It is believed the case is at least two weeks away from completion when it will be referred on to the district attorney, who is to make the final decision on whether Grigorieva will be charged with extortion and Gibson with domestic violence.

The Hollywood star has claimed his former girlfriend, with whom he has ten-month-old daughter Lucia, only released explosive audio tapes documenting their arguments and the alleged attacks after he refused her demands for cash.

In addition to the domestic battery charges, Gibson is also part of an investigation by the Department of Children and Family Services.