One of Northern Ireland's leading bookmaking firms suspended betting on three Carnegie League matches on Saturday afternoon.
Sean Graham removed the Cliftonville v Armagh, Glenavon v Limavady and Larne v Portadown fixtures from their list.
"Only small bets were involved but there was a certain popular bet and we felt there was a risk with Irish football," said a spokesperson.
On Thursday the Irish FA announced an inquiry into alleged match fixing.
The investigation concerned Glenavon's 4-0 win over Armagh City with both clubs refuting the allegations.
"We have to be seen as a governing body to be taking matters like this very seriously," said IFA chief executive Howard Wells.
"We gather there is information out there that would be of interest to us."
source : bbc.co.uk