The DNIC is not a division of the Secretaría de Inteligencia (SIDE), which has its own Directorate of Interior Intelligence.
At the time of the writing of the 1992 Interior Security Law 24.059, the National Aeronautical Police (Policía Aeronáutica Nacional, PNA) was controlled by the Argentine Air Force, therefore, the handling of its information was done by military intelligence.
In 2005, after the Southern Winds Narcobags Scandal, President Néstor Kirchner dissolved the PNA, and created a civil organism similar to the National Gendarmerie and the Naval Prefecture, the Airport Security Police (Policía de Seguridad Aeroportuaria, PSA).
DNIC also handles intelligence from the mentioned organism that has inherited from the military-controlled PNA.
Its mission, as detailed on Article 16 of the 1992 Interior Security Law 24.059, is to be a federal agency within the Ministry of Interior to strategically coordinate and direct the functions and operations of the intelligence services of the Federal Police, the National Gendarmerie, and the Naval Prefecture.