Section 20

by a police officer under a warrant which does not provide for the taking of bail or under a warrant which provides for the taking of bail but the person arrested cannot furnish bail; or

without warrant or by a private person under a warrant and the person arrested cannot legally be admitted to bail or is unable to furnish bail, the police officer making the arrest or, when the arrest is made by a private person, the police officer to whom such private person hands over the person arrested may search such person and place in safe custody all articles other than necessary wearing apparel found upon him, and any of those articles which there is reason to believe were the instruments or the fruits or other evidence of the crime may be detained until his discharge or acquittal.