A man was badly injured when the fight spilled onto tram tracks

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At least 20 people were involved in the fight, believed to have been between a group of Chechen and Turkish migrants, in the Austrian capital of Vienna on Tuesday evening.

Austrian media reported that the trouble started when a Chechen man approached a group of 15 Turkish men socialising in an internet cafe and told them to be quiet.

A brawl ensued, spilling out of the cafe and into the streets of the city's Favoriten district.

There was reports that one man was armed with a knife.

Vienna is also home to a large population of Chechen migrants.