Anti-racism group Never Again has urged UEFA to drop Marciniak after claiming he had promoted and was one of the keynote speakers at an event held by Mentzen at the International Congress Centre in Katowice.

Source: https://jerseyeveningpost.com/uksport/2023/06/02/champions-league-final-referee-could-be-removed-over-alleged-far-right-links/

Marciniak handled games with both Champions League finalists in the knockout rounds тАФ Manchester City’s 4-0 win over Real Madrid in the semifinals and Inter Milan’s 0-0 draw at Porto in the round of 16.

Source: https://indianexpress.com/article/sports/football/world-cup-final-referee-marciniak-picked-for-champions-league-final-duty-8623434/

Szymon Marciniak will referee Newcastle United's Champions League clash with Paris Saint-Germain on Tuesday night.

Source: https://www.chroniclelive.co.uk/sport/football/football-news/psg-vs-newcastle-united-tv-28183016