The Isis (Islamic State) jihadist group has been operating a cell from the city of Winterthur, northeast of Zurich, according to a Swiss war correspondent and expert on Syria.

Kurt Pelda, was who was named Swiss journalist of the year in 2014, told local newspaper Der Landbote the terrorist group established the cell around the An'Nur mosque in Winterthur's Hegi neighbourhood.

"A man from Winterthur became radicalized in the last few months and recently travelled to Syria," Pelda said.

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