[Scythian]

Also read this:

6. Singapore adopts a strict zero-tolerance approach towards corruption. It is a serious offence to obtain bribes, or attempt to obtain bribes from another individual or entity. Any person who is convicted of a corruption offence can be fined up to $100,000 or sentenced to imprisonment of up to 5 years or to both.

7. The CPIB looks into all corruption complaints and reports, including anonymous ones, and can be reached via the following channels….

So who can say CPIB is useless?

"Criminal justice system

If you look at a systemic level, at the highest level, you talk about "the criminal justice system".

We have the police who investigate in accordance with the legal framework for police investigations. The Attorney-General's Chambers (AGC) makes the charging decision based on (1) available evidence; and (2) public interest. The trial courts consider the sufficiency of the evidence and the legal issues. The appellate courts review the decision of the trial court..

This case shows that the criminal justice system as a whole works."

Home Affairs and Law Minister 
K. Shanmugam