A state investigator is alleging that the white man accused of killing Ahmaud Arbery was heard saying a racist slur as he stood over the mortally wounded black man, moments after hitting him with three shots from a pump-action shotgun.

The agent described evidence that Arbery was repeatedly boxed in by two pickup trucks as he desperately tried to escape.

Special Agent Richard Dial says Travis McMichael then shot him in the chest, the hand, and the chest again during a struggle.

The evidence challenges claims of self-defense during a citizens' arrest attempt, and could factor into a federal hate crime investigation.

64-year-old Greg McMichael and 34-year-old Travis McMichael were charged last month with felony murder and aggravated assault.

They were arrested after cellphone video of the shooting stirred a national outcry. The man who shot that video, 50-year-old William “Roddie” Bryan, is also charged with felony murder.

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