The Norwegian Police Security Service is the police security agency of Norway, comparable to the British MI5 (Security Service).
It is responsible for monitoring and securing the domestic security in Norway. Known operational departments include counterintelligence unit, counterterrorism unit, counterproliferation and organized crime unit, counterextremism unit, investigation unit, surveillance unit, technology unit, security analysis unit and foreign citizens unit. In addition, PST is in charge of all VIP protection domestically and abroad except for the royal family, which has its own independent escort service.