NICE, France—A knife-wielding man killed three people—nearly decapitating one of them—in the Notre Dame Basilica in Nice, police said, in an assault being treated as an act of terrorism.
Surveillance footage showed the attacker entered the towering basilica before 9 a.m. and spent some 25 minutes inside before a 44-year-old woman fled the building with multiple stab wounds, said Jean-François Ricard, France’s anti-terrorism prosecutor. She died moments later.
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