13. When a coroner establishes by his investigations that death was due to natural causes or was purely accidental, he shall draw up a summary minute of the information obtained and deposit it forthwith in the records of the clerk of the peace of the district where the inquest was held.
He shall also make a return to the Attorney General, sending him forthwith a copy of his minute, a statement of his fees and disbursements, if any, attested by his oath and accompanied by the vouchers and the declaration required by section 12, should the occasion arise.