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Internal Security Department (Singapore)

For the Bruneian domestic intelligence agency of the same name, see Internal Security Department (Brunei).

Coordinates: 1°19′24.58″N 103°50′38.72″E / 1.3234944°N 103.8440889°E / 1.3234944; 103.8440889{{#coordinates:1|19|24.58|N|103|50|38.72|E|region:SG_type:landmark |primary |name= }}

Internal Security Department
Jabatan Keselamatan Dalam Negeri
Xīn jiā pō nèi bù ān quán jú
180 px
Seal of the ISD
Agency overview
Formed 17 February 1966
Preceding Agency Special Branch, as part of the Malayan Security Service (1948)
Jurisdiction Government of Singapore
Headquarters New Phoenix Park, 28 Irrawaddy Road, Singapore
Minister responsible Teo Chee Hean, Minister for Home Affairs
Agency executive Classified
Parent agency Ministry of Home Affairs
Website Official Site

The Internal Security Department (ISD; Chinese: 新加坡内部安全; pinyin: Xīn jiā pō nèi bù ān quán jú) is a domestic intelligence agency of the Ministry of Home Affairs of Singapore. It was formerly part of the Ministry of Interior and Defence until it was split on 11 August 1970. It has the utmost right to detain without trial individuals suspected to be a threat to national security.

The stated mission is to confront and address security threats, including international terrorism, foreign subversion and espionage. The ISD also monitors and addresses potential threats from communism, prevention of racial tension which might affect the public peace, domestic counterterrorism, international counterterrorism, fraud against the state, surveillance, apprehension of suspected militants or terrorists and protection of Singapore's national borders.

Most of its manpower is based from the Singapore Police Force.[1]

The identity of ISD's director is not conspicuously made known to the public, until he relinquishes the post. Many of ISD's former directors went on to take up higher offices, including:


The powers of investigation and arrest of the ISD are regulated by several laws, including:[5]


ISD was first established as part of the Special Branch in 1948 by the British colonial government. In 1963, it became part of the Malaysian Special Branch when Singapore joined Malaysia. After Singapore gained independence, Internal Security Department was formally established on 17 February 1966.


These events are related to ISD and internal security of Singapore.

See also


  • Lee Kuan Yew. (1998). The Singapore Story. Federal Publications. ISBN 0-13-020803-5
  • Mathew Jones, "Creating Malaysia: Singapore Security, the Borneo Territories and the Contours of British Policy, 1961-1963" in Journal of Imperial and Commonwealth History, Vol. 28, No. 2, May 2000. pp. 85–109

External links