NICE, France (AP) — A young Tunisian man armed with a knife and carrying a copy of the Quran attacked worshippers in a French church and killed three Thursday, prompting the government to raise its security alert to the maximum level hours before a nationwide coronavirus lockdown. The attack in Mediterranean city of Nice was the third in less than two months that French authorities have attributed to Muslim extremists, including the beheading of a teacher who had shown caricatures of the Prophet Muhammad in class. Thursday’s attacker was seriously wounded by police and hospitalized in life-threatening condition. The prosecutor said he was not on the radar of intelligence agencies.