A teacher at a French preschool who said he had been stabbed by a man shouting “Islamic State” has admitted he made the story up, according to prosecutors.

The teacher said he had been attacked while alone in a classroom in Aubervilliers, a suburb of Paris. But prosecutors said he had wounded himself with a box cutter and was now being questioned as to why he lied.

The 45-year-old teacher – who has not been named – has been treated in hospital for superficial wounds to his side and neck.

According to BBC News, the incident sparked a manhunt in the northern suburb, as police tried to track down the alleged attacker.

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