The German Football Federation (DFB) on Monday opened an inquiry into the behaviour of Werder Bremen goalkeeper Tim Wiese following his side’s 2-0 win over Hamburg on Sunday.
The DFB’s disciplinary commission launched the procedure after viewing a video of Wiese celebrating with Werder fans after the final whistle.
Perched on the fence separating the pitch from the terraces, the German international brandished a megaphone to join in with the home fans’ chants, shouting “Shit on Hamburg!”
The DFB has asked Wiese to submit a written account of what happened.
Werder and Hamburg are the two biggest clubs in northern Germany and have a strong rivalry.
The teams have met four times over the last three weeks, with Werder eliminating Hamburg from both the German Cup and the UEFA Cup at the semi-final stage.
Werder’s victory on Sunday severely dented Hamburg’s hopes of winning the league and qualifying for next season’s Champions League.
Werder face Ukrainian side Shakhtar Donetsk in the UEFA Cup final in Istanbul on May 20.
