Chelsea and Real Betis supporters have clashed once more in Wroclaw, Poland, ahead of Wednesday night's Europa Conference League final.

Fans were spotted brawling in the fan zone less than a day after local police had to use tear gas to disperse a previous incident.

Over 70,000 fans were predicted to flock to Wroclaw for the final between the Blues and their La Liga rivals.

The most recent skirmish between the two groups of supporters resulted in one fan sporting a bloodied mouth.

The Sun report that bottles were 'hurled' by fans, who also aimed kicks and punches at each other. Smoke grenades were also thrown during the ugly scenes, which occurred just hours before kick-off at Stadion Wrocław.

Riot police were forced to intervene to restore order. The incident follows a different clash on Tuesday, which went viral on social media.

Polish Prime Minister Donald Tusk condemned the scenes, saying: "Zero tolerance for violence on our streets!

"I thank the police for their decisive actions against the hooligans in Chelsea and Betis shirts in Wroclaw. We warn you: if necessary, the police will be even more ruthless today!"

Chelsea and Real Betis will meet for silverware in Poland; the match represents the chance for Enzo Maresca, the Blues head coach, to cap his maiden season with a trophy.

The Italian has endured an up and down campaign but did secure qualification for the Champions League at the weekend after beating Nottingham Forest on the final day of the Premier League season to secure a fourth-place finish.

While the Europa Conference League trophy is not quite at the same level of previous trophies Chelsea have claimed, Maresca says that winning silverware is an important step for the Londoners in their quest to become 'an important club again'.

He said: "The message over the last 48 hours has been, 'We did something important [qualifying for the Champions League], but if we want to confirm that we are becoming an important club again, we need to show the desire to win the game and the trophy.

"So it's job done [in the Premier League], fantastic, and we're happy. But tomorrow is a different game, a final, and we want to win at any cost.

"Every day we have something to prove, no doubt. What we have done [qualifying for the Champions League] is done. Now we have to prove ourselves again tomorrow. We have played many games this season in this competition, now we have just one more."