Manchester City supporters anger with UEFA showed little sign of abating on Tuesday as they heaped further opprobrium on the Champions League anthem in Sevilla.
The club are currently facing a probe by the governing body after their fans jeered when the music was played at the Etihad Stadium two weeks ago.
Manager Manuel Pellegrini has defended their right to voice their disapproval and the travelling fans were in no mood to be cowed.
They booed when ball boys carried the Champions League banner to the centre-circle prior and were equally vociferous when the anthem was played before kick-off.
City went on to win the game 3-1 to qualify for the last 16 with two games to spare.
Much of the City supporters' frustration stems from a decision to play a Champions League match against CSKA Moscow behind closed doors last year because of a series of offences, including racial abuse, from the Russian club's fans.
Fans who had paid to travel to Moscow for the game were not compensated by UEFA, while some CSKA fans were reported to have attended the fixture.
City's case will be heard by UEFA's disciplinary committee on Thursday November 19.