Whenever it shall appear in Greater Bombay and other areas for which a Commissioner has been appointed under section 7 to the Commissioner and in other area or areas to which the State Government may, by notification in the Official Gazette, extend the provisions of this section, to the District Magistrate, or the Sub Divisional Magistrate specially empowered by the State Government in that behalf (a) that the movements of acts of any person are causing or calculated to cause alarm, danger or harm to person or property, or (b) that there are reasonable grounds for believing that such person is engaged or is about to be engaged in the commission of an offence involv 528 ing force or violence or an offence punishable under Chapter XII, XVI or XVII of the Indian Penal Code, or in the abetment of any such offence, and when in the opinion of such officer witnesses are not willing to come forward to give evidence in public against such person by reason of, apprehension on their part as regards the safety of their person or property, or (c) that an outbreak of epidemic disease is likely to result from the continued residence of an immigrant, the said officer may, by an order in writing duly served on him or by beat of drum or otherwise as he thinks fit, direct such person or immigrant so to conduct himself as shall seem necessary in order to prevent violence and alarm or the outbreak or spread of such disease or to remove himself outside the area within the local limits of his jurisdiction by such route and within such time as the said officer may prescribe and not to enter or return to the said area from which he was directed to remove himself.