Polish police are thought to have clashed with Chelsea and Real Betis supporters in Wroclaw ahead of the Conference League final on Wednesday night.
Both sets of fans are believed to have clashed in the Market Square in the city before police attempted to intervene.
In a video posted on social media, supporters can be seen throwing chairs toward law enforcement in unsavoury scenes, before they reportedly unleashed tear gas in an attempt to disperse the crowd.
Local police in Wroclaw, Poland, used tear gas during a clash with Chelsea and Real Betis fans
More to follow.