The European Sports Security Association group says betting coups connected to match-fixing typically involve crime syndicates in illegal markets in central and eastern Europe and Asia.
ESSA spokesman Khalid Ali tells The Associated Press "these bets are not being placed with the regulated, licensed operators."
FIFA is investigating the Latvia-Bolivia and Estonia-Bulgaria double-header played last Wednesday in Antalya, Turkey. All seven goals were scored on penalty kicks.
An agency that organized the games and the match officials are under suspicion.