Director Vic Reynolds said that video, which has spread widely on social media, was a key piece of evidence in the case in which two white men are seen chasing Arbery down on a residential street in southern Georgia.
He said it took 36 hours from the time the bureau began assisting in the probe to arrest the father and son, Gregory and Travis McMichael, who are accused of shooting Arbery, who was black. There were "some things that needed to be done" in the investigation that had been led by Atlantic Judicial Circuit District Attorney Tom Durden since April 14, he said.
