Relations between supporters and opponents of Turkish President Recep Tayyip Erdogan living in Switzerland are under strain in the wake of last week's failed coup, according to Swiss papers.

An estimated 120,000 people with Turkish roots currently live in Switzerland.

Citing various social media platforms, the 20 Minutes free newspaper suggests an online witch hunt may be underway.

"Erdogan supporters have launched appeals on Facebook and Whatsapp to report on regime dissidents," the newspaper reported.

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