Teachers in Winterthur in the canton of Zurich will be given training to help them spot the signs of radicalization among their students following the news that at least five young people from the area have joined Isis over the last few months.

As the new school term commences in Switzerland, the teachers will be advised by experts on the potential signs of jihadist leanings, reported newspaper Tribune de Genève on Tuesday.

Those could include a female student suddenly wearing a headscarf, or a male pupil refusing to shake the hand of a woman, said the paper.

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