Whenever it appears to the Commissioner of Police that the movement or encampment of any gang or body of persons in any part of Delhi is causing or is calculated to cause danger to person or properly or alarm or reasonable suspicion that unlawful designs are entertained by such gang or body of persons or by members thereof, the Commissioner of Police may, by order addressed to the persons appearing to be the leaders or chief men of such gang or body of persons and published by announcement or beat of drums, or otherwise as the Commissioner of Police thinks fit direct the members of such gang or body of persons-

(a) to so conduct themselves as shall seem necessary in order to prevent violence and alarm; or

(b) to disperse and to remove themselves beyond the limits of Delhi, or any part thereof, within such time as the Commissioner of Police shall specify and not to enter Delhi or the part thereof, as the case may be, from which they were directed to remove themselves.