Career
Jörg Ziercke entered police service with the Bereitschaftspolizei in 1967. From 1970 onwards, Ziercke worked as a criminal investigator with the state investigations bureau (Landeskriminalamt) in Kiel. In 1979 he became the chief of the Neumünster investigations department (Kriminalpolizei).
From 1985 up until his appointment as head of the Bundeskriminalamt, he worked in leading positions within the police of the state of Schleswig-Holstein.