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The Braveheart star has been accused of being violent towards his ex-girlfriend Oksana Grigorieva.
Tape recordings have been released in which a man, said to be Gibson, can be heard making various threats. He is also alleged to have use the 'N' word during one such recording.
Several stars, including Robert De Niro and Whoopi Goldberg have reached out to the actor, but Glover, who starred alongside Gibson in all four Lethal Weapon films, has decided not to voice his opinion.
A representative for Glover told the Los Angeles Times: "At this time, Mr. Glover does not have a comment, and there is no statement regarding Mr. Gibson… The decision is that he will not (comment)."
