BURNS, Ore. — The F.B.I. took the extraordinary step of releasing surveillance video on Thursday showing the shooting death of LaVoy Finicum, a member of the armed occupation of a federal wildlife refuge here in eastern Oregon, as the occupation continued by a handful of followers.

Mr. Finicum, 54, was killed Tuesday by Oregon State Police troopers, said Greg Bretzing, the special agent in charge for the F.B.I in Oregon, after he tried to run through a police barricade on a wooded road, then climbed from his truck and, Mr. Bretzing said, reached for a weapon in his jacket pocket.

“There are various versions of what occurred during this event: most inaccurate, some inflammatory,” Mr. Bretzing said, before playing the video — shot from an aircraft — at a news conference. “To that end, we want to do what we can to lay out an honest and unfiltered view of what happened and how it happened.”

Mr. Bretzing stressed the investigation of the shooting was continuing. But he said the officers fired on Mr. Finicum’s truck as it sped toward a roadblock and went off the road into a snowbank, and then again after he left the vehicle. He said the total number of shots fired was “in the single digits.”