Witnesses in Mel Gibson case threatened

12:35 PM PDT 9/16/2010 by Allison Hope Weiner, AP

Exclusive: Allegedly ignored by Gloria Allred; almost run over

Two potential witnesses in the Mel Gibson/Oksana Grigorieva criminal investigation have told authorities at the Los Angeles County Sheriff's department that their lives were threatened after they refused to fabricate evidence on behalf of Oksana Grigorieva, the actor's ex-girlfriend and the mother of his youngest child.