Celtic fans chanted hostile chants of Queen Elizabeth II - who died this month - during a minute of applause to commemorate her during the team's match against its host St Mirren in the Scottish Premier League on Sunday.
"If you hate the royal family, clap your hands," Celtic fans chanted, while a banner reading the phrase was seen at the end, according to British news agency BA Media.
Celtic coach Ange Postecoglou had previously expressed the club's desire for fans to be "respectful" during any honors.
And the European Football Association “UEFA” took disciplinary measures against Celtic, after fans of the Scottish team displayed a banner hostile to the royal family, in the team’s meeting against its Ukrainian host, Shakhtar Donetsk, which took place in Poland in the Champions League.
Minute's applause impeccably observed by the Celtic fans.
pic.twitter.com/oZfXebvene
— GrieveWatch (@GrieveWatch) September 18, 2022
There was unrest during the Queen's tribute at some Scottish Premier League matches on Saturday.
The fans of "Dundee United" interrupted a minute's silence before the team's meeting with its host Glasgow Rangers, and boos and insulting chants were heard coming from the corner of the "Ibrox" stadium, which includes several hundred fans of the team.
There were similar responses before Hibernian's game with Aberdeen at Easter Road, with boos and boos heard during a minute of applause.
The Scottish Football Association had decided to postpone all matches the previous weekend following the Queen's death.