French forensic police officers work at the Gambetta high school after a man armed with a knife killed a teacher and wounded two others in Arras, northern France, Friday, Oct. 13, 2023. Antiterror prosecutors said they were leading the investigation into the attack at the Gambetta high school in the city of Arras, some 115 miles (185 kilometers) north of Paris. (AP Photo/Michel Euler)
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