52 people and three policemen are said to have been injured after the clash between festival participants and counter-demonstrators at the Eritrean cultural festival at Järvafältet in Stockholm.
Stone throwing has occurred and cars have been set on fire. There are also reports of people using sticks as weapons.
– It is total anarchy, I have never seen so many policemen, says a witness to SVT Nyheter.
100-200 people have been detained and the police are currently investigating violent riots, arson and serious blue light sabotage.