At least 84 people, including two Americans, are dead after what authorities believe to be a terror attack in Nice, France.
A truck drove through a crowd of people who had been watching Bastille Day fireworks along Nice's famous Promenade des Anglais seafront on Thursday night, killing scores of people. Pedestrians scattered out of the truck's path before police killed the driver of the truck, French officials said.
Sean Copeland and his 11-year-old son, Brodie are among those killed. The Texas family had been in Nice on vacation.
France's president, Francois Hollande, addressed the country early Friday to condemn the attacks.
"It is France as a whole which is threatened by Islamist terrorism. In such circumstances, we must show our absolute vigilance and determination," he said. "France is strong. France will always be stronger than the fanatics who want to strike France today."
No one has yet claimed responsibility for the attack. The investigation is being handled by the Paris anti-terrorism prosecutor's office.
ABC News contributed to this report.
Photos: Truck drives through Bastille Day crowd in Nice, killing scores
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Joe West/303 Photos
Brodie, left, and Sean Copeland
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