(1) A coroner is not required to continue an investigation into a reportable death if—
(a) the coroner determines that the death was not a death referred to in section 4(2)(b); and
(b) a medical investigator conducts a medical examination on the deceased person and provides a report to the coroner that includes an opinion that the death was due to natural causes; and
(c) the coroner determines that, other than the fact that the death of the person was unexpected, the death is not a reportable death; and
(d) the coroner determines that the death is not a reviewable death.
(2) If a coroner determines under this section not to continue an investigation, the principal registrar must notify the Registrar of Births, Deaths and Marriages, without delay, of the prescribed particulars.