Exclusive: Uefa investigate claims Szymon Marciniak attended event in Poland organised by Sławomir Mentzen
Uefa is investigating claims the referee due to officiate the Champions League final next week was a keynote speaker at an event organised by a far-right politician.
Szymon Marciniak, who also refereed the World Cup final, spoke at an event in Poland on Monday which was organised by Sławomir Mentzen.
