Former Manchester City midfielder Steffen Karl has become the first player to be arrested in connection with Germany's match-fixing scandal.
Karl faces fraud and organised crime charges
Karl, 35, now plays for German third division side Chemnitz.
He is suspected of helping manipulate the results of a May 2004 match between Chemnitz and SC Paderborn.
Karl joined City on loan from Borussia Dortmund late in the 1993/4 season and scored two crucial goals to help Brian Horton's side stay in the Premiership.
Since leaving City in the summer of 1994, Karl has had a nomadic career, playing in Switzerland, Norway and Bulgaria before joining Chemnitz in 2003.
He is now facing fraud and organised crime charges.
Two referees have already been arrested as part of the investigation - Robert Hoyzer and Dominik Marks.
Prosecutors are investigating a total of 25 people - Hoyzer, Marks, two other referees and 14 players - in connection with at least 10 matches in 2004.