Bayern Munich have been fined 15,000 euros by the DFB following a series of incidents during recent Bundesliga matches.
The German Football Association (DFB) said they were acting against the league leaders "because of two cases of unsporting behaviour and not having enough stewards".
Bayern fans set off flares during a clash with Fortuna Dusseldorf at the Allianz Arena on October 20, while fireworks were let off during the November 17 clash with Nurnberg.
The club's stewarding procedures were then called into question when a Bayern supporter tried to gain access to the pitch during the match with Borussia Dortmund on December 1.
Bayern informed the DFB that they have accepted the ruling.