Football officials from nine countries have begun an emergency meeting with UEFA about Europe's biggest match-fixing investigation.

The European football body invited national association leaders from Austria, Belgium, Bosnia, Croatia, Germany, Hungary, Slovenia, Switzerland and Turkey to Wednesday's summit.

Turkish FA general secretary Ahmet Guvener says the associations want more information from UEFA.

German-based gangs are suspected to have manipulated 200 matches this year as part of organized betting scams.

Most are national league games, with 15 Champions League and Europa League qualifying matches under suspicion.

German police arrested 15 people last week and two players have been questioned in Switzerland.