CrPC Section 37
Public when to assist Magistrates and police
Every person is bound to assist a Magistrate or police officer reasonably demanding his aid—
a. in the taking or preventing the escape of any other person whom such Magistrate or police officer is authorised to arrest; or
b. in the prevention or suppression of a breach of the peace; or
c. in the prevention of any injury attempted to be committed to any railway, canal, telegraph or public property.