A 21-year-old Serbian citizen has been stabbed to death in Vienna, Austria, in a fight that broke out in the night between Saturday and Sunday.

A 22-year-old Bulgarian citizen was seriously wounded during the incident, that involved a group of Afghans and Chechens.

The local police said that the Serbian and the Bulgarian got into a fight with four Afghans and Chechens, one of whom pulled a knife, on a sidewalk near the U6 Underground station in Vienna.

The attackers have been placed under arrest, while the cause of the fight was unknown on Monday.