Act 9 Penal Code Act 2008 (c) instigating any other State or foreign person to invade Southern Sudan. (3) Nothing in this section shall prevent the doing of anything by lawful constitutional means directed at— (a) the correction of errors or defects in the system of the government, the ICSS or the administration of justice in Southern Sudan; (b) the removal of the government or impeachment of the President of Government; (c) the adoption or change of policies or repeal of legislation; or (d) the review of any matter established by law in Southern Sudan. 65. Concealing Treason. Whoever, subject to section 64(3) of this Act, is a citizen of or a resident in Southern Sudan and knows that any person, whether inside or outside Southern Sudan— (a) has done or attempted to do; (b) is doing or is attempting to do; or (c) intends to do; any act with the intention of overthrowing the government, does not inform an official, as soon as is reasonably possible, after acquiring such knowledge, commits the offence of concealing treason, and upon conviction, shall be sentenced to imprisonment for a period not exceeding twenty years or with a fine or with both. 66. Subverting Constitutional Government. Whoever, whether inside or outside Southern Sudan— (a) organizes or sets up, or advocates, urges or suggests the organization or setting up of, any group or body with aim of— 54