Several members of FIFA's executive committee have already been questioned by the Swiss justice, and president Sepp Blatter could also be quizzed "in the future if needed", a spokesman for the Swiss public prosecutor said.
Unless the world of soccer shifts on its axis at the end of this month, Sepp Blatter will be re-elected as FIFA president.
Sepp Blatter comes across as an amiable character with eccentric ideas about football but he has shown in the past that he possesses a ruthless instinct for survival and extraordinary political nous.