The Internal Security Act 1960 (ISA) of Singapore is a statute that grants the executive power to enforce preventive detention, prevent subversion, suppress organized violence against persons and property, and do other things incidental to the internal security of Singapore. The present Act was originally enacted by the Parliament of Malaysia as the Internal Security Act 1960, and extended to Singapore on 16 September 1963 when Singapore was a state of the Federation of Malaysia.
Old Parliament House, photographed in January 2006
Teo Chee Hean, the Deputy Prime Minister, Coordinating Minister for National Security and Minister for Home Affairs in the 12th Parliament of Singapore, justified the Internal Security Act in Parliament in October 2011
Timeline of legal developments concerning the exercise of discretion under the ISA
Teo Soh Lung in 2011. Upon an appeal brought by her, the Court of Appeal held that the 1989 amendments to the Constitution and ISA had reimposed the subjective test for the exercise of discretion under the ISA.
Sources of Singapore law
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There are three general sources of Singapore law: legislation, judicial precedents, and custom.
The Statutes of the Republic of Singapore, a series that consists of all Acts of the Singapore Parliament and English statutes that are currently in force in Singapore
The series Subsidiary Legislation of the Republic of Singapore is a compilation of all subsidiary legislation currently in force in Singapore
The Singapore Law Reports, first published by the Singapore Academy of Law in 1992, contain reports of significant judgments handed down by the High Court, Court of Appeal and Constitutional Tribunal of Singapore