In 1925 and 1926, separate sections were built on the second storey of the main building to host the increasing number of imprisoned communists, following the (November 1924) and the attempt to overthrow the government after 1 December 1924. The prison’s capacity was further enlarged to host approximately 1,500 prisoners in the 1930s, with the addition of the second and third blocks. To save public money, the prisoners had to earn their upkeep in a sewing workshop, print shop, bindery and other facilities located within the complex.