Criminal Law (Temporary Provisions) Act

The Criminal Law (Temporary Provisions) Act 1955 (often known by the abbreviation "CLTPA") is a Singapore statute that, among other things, allows the executive branch of the Government of Singapore to order that suspected criminals be detained without trial. It was introduced in 1955 during the colonial era and intended to be a temporary measure, but has since been renewed continuously; the Government has declined to make it permanent, claiming it "believe[s] that the Act should be explicitly extended by Parliament every five years".

Source: Wikipedia — Criminal Law (Temporary Provisions) Act (CC BY-SA 4.0)