Eight people have been arrested after Borussia Dortmund fans clashed with riot police in Greece during their side's Europa League match against POAK.
Violence broke out when visiting Dortmund supporters began throwing flares and fireworks from the away stands towards the authorities, who were in place to separate the sets of fans.
According to The AP, none of the people involved suffered injuries, but eight German fans were taken into police custody in Thessaloniki.
The game, which was stopped for a few minutes in the second half in order to calm the crowd, ended in a 1-1 draw.
