The confiscation of the property of political offenders by government and police authorities usually includes books and other material considered subversive, immoral or degrading, though it may extend to other property especially if the accused becomes a long-term prisoner. Property may be confiscated if it is felt to be connected with espionage practices or if it can be used in a political trial. Political confiscation of property may serve to tighten government control and may cause deprivation.