nationalist who was detained. they're just restricted to the base, but are fully cooperating with this investigation so they have a lot of evidence they're working through as they kind of try to figure out exactly the intent behind this on friday morning. >> mark esper today mentioned reports that at least one of the killer's friends made a video of the shooting and there's new clarification. bring it to us u. >> we're getting information from sources here at cnn learning the video was taken after the shooting started and emergency response that followed from a source it was a saudi national. but we're told from this source that this person had no relation or no nefarious act. just what the fbi's saying as a bystanderer. wasn't even close to the scene as it was unfolding.