If the deceased is unidentified, the state, district or deputy medical investigator may order the body fingerprinted and photographed. When the state, district or deputy medical investigator suspects a death was caused by a criminal act or omission or if the cause of death is obscure, he shall order an autopsy performed by a qualified pathologist certified by the state board of medical examiners who shall record every fact found in the examination tending to show the identity and condition of the body and the time, manner and cause of death. The pathologist shall sign the report under oath and deliver it to the state, district or deputy medical investigator within a reasonable time. The state, district or deputy medical investigator may take the testimony of the pathologist and any other persons and this testimony, combined with the written report of the pathologist, constitutes an inquest.