The Swiss special prosecutor has opened criminal proceedings against FIFA president Gianni Infantino relating to dealings with the country's attorney general Michael Lauber.
Lauber offered to resign from his position last week after a court found he covered up an undisclosed meeting with the head of football's governing body and lied to supervisors while his office probed corruption relating to FIFA.
Stefan Keller was appointed as special prosecutor to review criminal complaints against Infantino, Lauber and other individuals.
A statement from the Swiss Federal Council said Keller had found "indications of criminal conduct".
Proceedings have consequently commenced against Infantino and the chief public prosecutor of Upper Valais, Rinaldo Arnold.
Keller has also requested permission to open proceedings against Lauber.
Both Infantino and Lauber have previously denied any wrongdoing.
The Federal Council statement added: "The presumption of innocence applies to attorney general Michael Lauber, FIFA president Gianni Infantino and chief public prosecutor Rinaldo Arnold. The special federal public prosecutor is independent in his activities."