Humphreys added that given its long association, match-fixing scandals have little “shock factor” in the city-state, meaning that there is scant public pressure for action.
Interpol said that a “united and global” effort was needed to fight a crime which cuts across borders.
“Each time arrests in connection with match-fixing are made anywhere in the world it makes headline news, but this is probably because they are still too rare an occurrence,” an Interpol spokeswoman told reporters.
“I don’t see how government regulation and syndicate busts can change a culture where sporting events, festive occasions, family gatherings are often built around the betting shop, a pack of cards or a mahjong table,” Humphreys said.
No charges have been filed yet against Dan Tan.