Police officers and rescued workers stand near a van that ploughed into a crowd leaving a fireworks display in the French Riviera town of Nice on July 14, 2016.
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Police officers and rescued workers stand near a van that ploughed into a crowd leaving a fireworks display in the French Riviera town of Nice on July 14, 2016.
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French soldiers patrol in front of the Eiffel Tower on January 8, 2015 in Paris as the capital was placed under the highest alert status a day after heavily armed gunmen shouting Islamist slogans stormed French satirical newspaper Charlie Hebdo and shot dead at least 12 people in the deadliest attack in France in four decades. A huge manhunt for two brothers suspected of massacring 12 people in an Islamist attack at a satirical French weekly zeroed in on a northern town Thursday after the discovery of one of the getaway cars. As thousands of police tightened their net, the country marked a rare national day of mourning for Wednesday's bloodbath at Charlie Hebdo magazine in Paris, the worst terrorist attack in France for half a century. AFP PHOTO / BERTRAND GUAY (Photo credit should read BERTRAND GUAY/AFP/Getty Images)
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Fire department ambulances and vehicles are parked near the scene of an attack after a truck drove on to the sidewalk and plowed through a crowd of revelers who'd gathered to watch the fireworks in the French resort city of Nice, southern France, Friday, July 15, 2016. A spokesman for France's Interior Ministry says there are likely to be "several dozen dead" after a truck drove into a crowd of revelers celebrating Bastille Day in the French city of Nice. (AP Photo/Christian Alminana)
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Police officers, firefighters and rescue workers are seen at the site of an attack on July 15, 2016, after a truck drove into a crowd watching a fireworks display in the French Riviera town of Nice. A truck ploughed into a crowd in the French resort of Nice on July 14, leaving at least 60 dead and scores injured in an "attack" after a Bastille Day fireworks display, prosecutors said on July 15. / AFP / Valery HACHE (Photo credit should read VALERY HACHE/AFP/Getty Images)
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CNN  — 

A truck drove into a crowd at Bastille Day ceremonies late Thursday in Nice, France, killing “probably” 30 people and injuring 100 more, a local prefecture official told CNN.

Here’s what we know: