By Kate Ward
July 08, 2010 at 07:35 PM EDT

The Associated Press reports that Mel Gibson has been targeted as the subject of a domestic violence investigation opened by the L.A. Sheriff’s Department. In a news release, the Sheriff’s Department states the alleged attack occurred Jan. 6, and that the alleged victim is the actor’s ex-fiancé, Oksana Grigorieva. No other details are known at this time. Gibson’s rep has not yet issued a response to the matter.

Summit Entertainment, the studio behind Gibson’s next film, The Beaver, says the investigation won’t alter the movie’s marketing schedule, as a release date has not yet been set. “We will not focus on any marketing efforts until we know when the film will be released,” a rep from the studio told EW. Icon Productions, the studio behind Gibson’s How I Spent My Summer Vacation, have no comment.