There is currently no blanket ban on public officers visiting the two casinos here, but the police and Central Narcotics Bureau (CNB) already have strict rules for their officers in this area.

The Corrupt Practices Investigation Bureau (CPIB) will also follow the men-in-blue by imposing tighter restrictions for its officers very soon.

The move comes after one of its senior officers was charged in court this week with gambling away funds he had siphoned from the anti-graft agency's account to feed his gambling habit at the Marina Bay Sands casino.

In a statement on Friday, the Public Service Division (PSD) said public officers can visit casinos when they are off duty, and that "there is no across-the-board ban". But it is now reviewing if tighter rules with regard to that should be put in place for the wider public service.

It added that some agencies have already imposed restrictions on their officers. For instance, the Casino Regulatory Authority has prohibited its officers from visiting not only the two casinos here, but also those casinos overseas that belong to the parent companies of the two operators here since 2008, even before the casinos here were opened. They are allowed to visit the casinos only when carrying out official duties.

The Singapore Police Force has also instituted a similar ban since 2009, for their officers dealing with law enforcement matters involving the casinos. It also conducts credit bureau screening on the credit standing of all police officers, to identify and assist those who may have financial issues.

Since last year, the police also made it a requirement for their officers involved with general law enforcement work to declare their casino visits within seven days of each visit. The CNB followed suit early this year.