The truck that ran into a Bastille Day celebration Thursday night in Nice, France, killing dozens, appeared to have done so in a well-planned, intentional attack, witnesses and security experts told NBC News.
Nader El Shafei, 42, was vacationing from Cairo, in the lobby of the Hotel Mercure on the Promenade des Anglais, watching holiday fireworks when he saw the truck.
"He smashed into a lot of people," El Shafei told NBC News. "I was waving to the driver, 'Stop' there's a girl under the truck.'"
He said he still thought it might have been an accident at that point, but then realized it was likely a deliberate attack. "He was not concentrating on what was going on. He was looking back and forth," said El Shafei.