During the following month of May, the Jewish population of Zagreb began to be rounded up en masse and sent to Danica as well. Innocent civilians across the region of the NDH who were sent here to Danica were arrested largely under the pretense that they were "Chetniks" and/or "enemies of the state" or some nature of "undesirable". As for their transport to the camp, this was done primarily via train cars, as the site of the camp was chosen in part for its proximity to the Koprivnica main train line. The train cars upon which prisoners were shipped to Danica were often labeled on their sides with signage reading "rotten fruit", which served twofold as a disguise and as a means of symbolically humiliating and dehumanizing the prisoners. The concentration camp of Danica was itself not a "death camp", but rather a transfer camp from which its prisoners would be sent onward to other concentration camps across the NDH that did specialize in liquidating its captives, such as Jasenovac, Stara Gradiška, Jadovno, among others. Of course, that is not to say that prisoners were not killed or executed at Danica, as they most certainly were. Untold numbers were killed by beatings, torture, forced labor, hangings, among other grisly means. Furthermore, as the camp was surrounded by upwards of 15 guard towers (Photo 2), many prisoners were also killed during escape attempts. Overall, records indicate that over 5,500 prisoners passed through Danica during its short existence and that somewhere between 200-300 of its prisoners were killed/executed on the premises. It is important to note that these numbers include not only men but women and children as well.