A teenager has been arrested after a masked attacker stabbed five people at an open-air cafe in Turkey and broadcast the rampage on social media.

Wearing a helmet, mask and bulletproof vest adorned with neo-Nazi symbolism, the attacker – who was also armed with an axe – used a knife to stab people at a tea garden and a tram stop in the northwestern city of Eskisehir, reports suggest.

Two people were left in a critical condition, Turkish broadcaster Haberturk reported.

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An online handle linked to the attacker in local media reports appears to have engaged with content relating to racist abuse and mass killings.

A photograph appearing to show the attacker’s weapons and protective gear, published by Istanbul-based outlet Oksijen, showed a mask bearing a neo-Nazi-linked skull, a knife adorned with swastikas and other Nazi symbols and a vest featuring a sun symbol co-opted by the Nazis.