| (a) | - | when information as to the commission of any such offence is given against any person by name and the case is not of a serious nature, the officer in charge of a police station need not proceed in person or depute a subordinate officer to make an investigation on the spot; |
| (b) | - | if it appears to the officer in charge of a police station that there is no sufficient ground for entering on an investigation, he shall not investigate the case: |