Internal Security Department (Brunei)
The Internal Security Department is Brunei's domestic intelligence agency, which is under the Prime Minister's Office. They are known to detain anyone suspected of being a threat to Brunei's national security for as long as needed. They are involved in both criminal and intelligence matters. History
The ISD was created to replace the Royal Brunei Police's Special Branch division, which was disbanded on August 1, 1993. In 2011, Tobishima Corporation was the contractor responsible for completing the Latifudin Complex Tungku Link in Rimba. Roles
The ISD is in charge of cases that involve subversion, espionage, sabotage, terrorism and promotion of racial/religious violence. However, the ISD collaborates with the Royal Brunei Police Force to maintain internal security. Organization
The ISD has its headquarters at Jalan Utama Mentiri with branch offices in Tutong, Belait and Temburong. References

External links
 Official Site

Government of Brunei
Law enforcement agencies of Brunei
Bruneian intelligence agencies
Government agencies of Brunei