The England Supporters Band, made up of Sheffield Wednesday fans, was asked to stop playing at this week’s England v Scotland friendly - after anti-IRA chants were heard on the terraces.
A tune the band was playing became the backdrop for the chant, prompting an FA official to ask members to stop playing during the first half.
During the match tensions ran high, with England and Scotland fans each heard booing during the national anthems.
England supporters were also heard making anti-IRA chants during the game.
Police said there were no reports of offensive chants following England’s 3-1 victory.
England manager Roy Hodgson said he was unaware of the chanting but apologised for any offence on behalf of the FA.
He said: “I was aware the crowd were tremendously supportive. I didn’t have a clue what they were chanting.
“I don’t condone it. If anyone was offended, I’m sure the FA would like to apologise to them.”