Special Sub Jails are meant for confining persons sentenced to undergo imprisonment up to 3 months besides Remand / Under Trial prisoners. There are 16 Special Sub Jails, situated at Thiruvananthapuram (Poojappura), Neyyattinkara, Kottarakkara, Mavelikkara, Ponkunnam, Devikulam, Muvattupuzha, Irinjalakkuda, Chittoor, Manjeri, Kozhikode, Vythiri, Kannur, Thalassery, Koothuparambu, Kasaragod.