Germany's World Cup-winning midfielder Bastian Schweinsteiger apologised on Monday after footage emerged of the Bayern Munich star making derogatory comments about Bundesliga rivals Borussia Dortmund.
Schweinsteiger was filmed saying: "BVB, sons of bitches," a line from a well-known Bayern supporters song, several times at a private party.
The video which runs for around one minute appeared online at the weekend and was the subject of much talk in Germany.
The footage, apparently filmed two days after Germany's 1-0 extra-time victory over Argentina in the World Cup final, prompted Schweinsteiger to issue an apology on his Facebook page.
"I would like to ask forgiveness from the fans, officials and players of Borussia Dortmund. I don't want to make things out to be better than they are. It's a well known supporters song, but I didn't intend to offend anyone," said Schweinsteiger.