"Polizeihäftlinge" (police inmates), short for "Polizeilich Sicherungsverwahrte Häftlinge" (police secure custody inmates), wore either PH in large black letters on a white square or the letter S (for "Sicherungsverwahrt" – secure custody) on a green triangle. To save expense, some camps had them just wear their civilian clothes without markings. Records used the letter PSV ("Polizeilich Sicherungsverwahrt") to designate them. They were people awaiting trial by a police court-martial or who were already convicted. They were detained in a special jail barracks until they were executed.