Described by the Nazis as a Polizeihaftlager (police detention camp), it carried out three functions: eliminating hostages, partisans, Italian, Slovene and Croat political prisoners; sorting political and racial detainees for deportation to other camps in the Reich; and storing property confiscated from Jewish communities of the Adriatic Coast.
It is very difficult to assess the extent of each of the three functions.
We can only say that many thousands of prisoners were sent to other concentration camps, and thousands of partisans and political prisoners were murdered.