The Internal Security Bureau is a state administration authority, whose task is to detect, prevent and investigate offences, committed by officials and employees of subordinated institutions (except Security Police) of the Ministry of the Interior, thereby raising the trust of society in state administration and improving public safety.
The Internal Security Bureau is also investigating the violence-related crimes, which, in the course of their duties, were committed by prison administration officials with special ranks, employees of the Port Police and the Municipal Police.
The Internal Security Bureau carries out the pre-trial investigation and operational activities.
The Internal Security Bureau is controlled by the Ministry of the Interior, while the operational activities and lawfulness of the pre-trial investigation process is monitored by Prosecutor's Office of the Republic of Latvia.
The Internal Security Bureau operates since the 1st of November 2015.