Mel Gibson ex has witnesses to prove attack claims

London: Hollywood star Mel Gibson`s ex-girlfriend Oksana Grigorieva has claimed she has witnesses to prove her domestic violence allegations against the actor.

Grigorieva, who has a nine-month-old daughter with the `Braveheart` star, said she has people on her side who saw the actor attacking her on January 6 during the row at her home, Contactmusic reported.

The 54-year-old actor and filmmaker is accused of pulling a handgun on Grigorieva during a heated argument, in which he is believed to have broken her two front teeth and threatened her with a bat.

One of the witnesses is apparently someone who works with the 40-year-old Russian singer on her music.

Meanwhile, another woman claiming to have an affair with Gibson between July 2009 and January 2010 has said Gibson has an "anger problem".

"I think he has an anger problem. When he gets angry, he gets really angry," said Violet Kowal, who started seeing Gibson after he separated from his wife Robyn.