to conditions. If there is a reason for the Commissioner of Police to believe that any person: or any person has breached any conditions imposed, the Commissioner can require that the person leave Singapore within a certain time and remain abroad for six months or a lesser period; or take the person into custody and remove them from Singapore, whereupon the person must remain out of Singapore for six months. Failure to comply with any order by the Minister or a breach of the conditions of any permission to travel to Singapore is an offence. The above provisions do not authorize the removal from Singapore of any citizen of Singapore ordinarily resident in the country. Provisions relating to security areas Part III of the ISA deals with security areas. Section 48, which is the only provision in Chapter I of Part III, empowers the President, acting on the Cabinet's advice, to proclaim any area in Singapore a security area if in his opinion public security in the area "is seriously disturbed or threatened by reason of any action taken or threatened by any substantial body of persons, whether inside or outside Singapore, to cause or to cause a substantial number of citizens to fear organised violence against persons or property" and "he considers it to be necessary for the purpose of suppressing such organised violence". A proclamation of a security area must be published by the Home Affairs Minister in any way that the Minister thinks necessary for bringing it to the notice of all persons who, in the Minister's view, should have notice of it. It comes into effect once notice has been given, even if it has not yet been published in the Government Gazette. A proclamation remains in force until the President revokes it or Parliament annuls it by passing a resolution. Preservation of public security Chapter II of Part III of the ISA empowers the Minister to take various steps to preserve public security. Within a security area, the Minister may declare areas to be danger areas, controlled areas or protected places. No person is allowed to enter or remain in a danger area unless escorted by a member of a security force, and to enforce this prohibition security forces can take all necessary measures, including those that are "dangerous or fatal to human life". A person who is injured while in a danger area unlawfully