A man who claimed he was traveling with members of a protest group during a fatal traffic stop in Oregon on Tuesday said the man who was shot dead, LaVoy Finicum, had charged at police officers.

In a nine-minute video uploaded to his Facebook page, Mark McConnell said he was driving one of two vehicles carrying activists who had seized a federal wildlife refuge in rural eastern Oregon.

The Times could not independently verify that Mr. McConnell was indeed traveling with the group nor could it immediately confirm any details of his account with the authorities.

According to Mr. McConnell’s account in the video, Mr. Finicum became “rather heated” after police officers stopped the cars and detained most of the activists.