Regulation 31 Duties of the Commissioner on references under regulation 29
The Commissioner must, in the case of every DSI matter referred to the Commissioner by an appropriate authority, determine whether or not it is necessary for the matter to be investigated.
The Commissioner must determine that it is necessary for DSI matters referred to the Commissioner in relation to which the relevant officer is a Provost Marshal to be investigated.
Where the Commissioner is required by paragraph (2) to determine that it is necessary for a DSI matter to be investigated, regulation 32 applies in relation to the matter as if paragraphs (4)(a), (5) and (9)(b) of that regulation were omitted.
Where the Commissioner determines under this regulation that it is not necessary for a DSI matter to be investigated—
in a case where the DSI matter is already being investigated by the appropriate authority on its own behalf (and notwithstanding the Commissioner’s determination) the Commissioner must refer the matter back to the appropriate authority for the investigation to be completed; and
in any other case, the Commissioner may, if the Commissioner thinks fit, refer the matter back to the appropriate authority to be dealt with by that authority in such manner (if any) as that authority may determine.