Finnish police say they are questioning five players and one other person suspected of being involved in match fixing.
The National Bureau of Investigation says the players are suspected of taking bribes to fix matches in Finland last year.
A police statement said they also were holding a Singapore citizen arrested with false identification papers on February 25. He is suspected of “paying players to fix match results,” it said.
HJK Helsinki’s Zambian midfielder Dominic Yobe is among those questioned by police and has been instructed not to leave the country, the club has confirmed.
“He (Yobe) has been suspended from training and games temporarily and we are starting discussions with Dominic about the situation immediately,” club spokesman Felix Siivonen told Reuters.
“When we get more information from the police and from Dominic we will be making some decisions but it’s far too early to say just yet.”