But the agency did issue a statement saying that it adopted a "zero toleranceapproach towards corruption, and match-fixing of any kind is not condoned in Singapore".
Rob Curtis, the Vale cabinet member for the environment and visible services, said the new "zero tolerance" approach would see Xfor staff patrolling in the evening and at weekends.
El Salvador and Honduras, for example, have largely committed to the mano dura (firm hand) or super mano dura approach, which emphasizes zero-tolerance law enforcement for tackling gang violence issues.