Whenever it shall appear in the City of Bangalore and other areas for which a Commissioner is appointed under section 7 to the Commissioner, and in a district to the District Magistrate, the Magistrate or the Superintendent specially empowered by the Government in this behalf, that the movement by encampment of any gang or body of persons in the area in his charge is causing or is calculated to cause danger or alarm or reasonable suspicion that unlawful designs are entertained by such gang or body or by members thereof, such officer may, by notification, addressed to the persons appearing to be the leaders or chief men of such gang or body and published by beat of drum or otherwise as such officer thinks fit, direct the members of such gang or body so to conduct themselves as shall seem necessary in order to prevent violence and alarm or to disperse and each of them to remove himself outside the area within the local limits of his jurisdiction or such area and any district or districts, or any part thereof, contiguous thereto within such time as such officer shall specify, and not to enter the area or the areas and such contiguous districts, or part thereof, as the case may be, or return to the place from which each of them was directed to remove himself.