pronouncements about him. and so the investigation needs to further show these links if they exist. >> i should say we just got some reporting from jonathan dean, an nbc reporter in new york, saying there's a note in the truck claiming he's from isis. that's the first i'm hearing from that. >> if that's the case, that matches almost exactly what was said in isis' magazine. in a couple of issues ago they specifically said to do truck attacks. they said don't use a car. it's not heavy enough. and to be sure people know it's isis, leave notes. and they suggested throwing them out of the window of cars. so who knows. this also a style of attack of al-qaeda. again, it's too early to tell. but if that's the case, it seems to point in that direction. >> i'm not sure what to make of the spectacle of this individual