Fraudulent retention or secretion of mail bag or postal packet

Every person who, (a) fraudulently retains or wilfully secretes, keeps or detains; or (b) being required by an officer of the Post Office to deliver up, neglects or refuses to deliver up, a mail bag or postal packet which ought to have been delivered to any other person, or a mail bag or postal packet which has been missent, whether it is found by the person secreting, keeping, detaining or neglecting or refusing to deliver up the same, or by any other person, commits an offence and shall be liable on conviction to a term of imprisonment not exceeding five years.