(1) When any offence is committed in the presence of a Magistrate, whether Executive or Judicial, within his local jurisdiction, he may himself arrest or order any person to arrest the offender, and may thereupon, subject to the provisions herein contained as to bail, commit the offender to custody.
(2) Any Magistrate, whether Executive or Judicial, may at any time arrest or direct the arrest, in his presence, within his local jurisdiction, of any person for whose arrest he is competent at the time and in the circumstances to issue a warrant.
Code of Criminal Procedure (CrPC)
41 CrPC When police may arrest without warrant
41A CrPC Notice of appearance before police officer
41B CrPC Procedure of arrest and duties of officer making arrest
41C CrPC Control room at districts
41D CrPC Right of arrested person to meet an advocate of his choice during interrogation
42 CrPC Arrest on refusal to give name and residence
43 CrPC Arrest by private person and procedure on such arrest
45 CrPC Protection of members of the Armed Forces from arrest
47 CrPC Search of place entered by person sought to be arrested
48 CrPC Pursuit of offenders into other jurisdictions
49 CrPC No unnecessary restraint
50 CrPC Person arrested to be informed of grounds of arrest and of right to bail