The German Football Association (DFB) have asked Bayern Munich manager Carlo Ancelotti to explain why he made an offensive gesture to Hertha Berlin fans during his side's 1-1 draw on Saturday.
The 57-year-old admitted to raising his middle finger at the home fans after "being spat at" following his side's 97th-minute equaliser in the Bundesliga clash.
However, the Italian must now submit a formal statement of the events and could face punishment for his actions.
"The supervisory committee of the German Football Association has on Monday called upon Carlo Ancelotti to submit a statement on the events that transpired after Bayern's match at Hertha Berlin on Saturday. The Bayern head coach will of course comply with this request," read a statement from Bayern.
Robert Lewandowski's late equaliser at the Olympic Stadium leaves Bayern five points clear at the top of the Bundesliga table.
