(a) In an inquest under this chapter, the sheriff or any constable must serve subpoenas for witnesses or they may be served by the coroner.
(b) If any witness, being subpoenaed, fails to attend, the coroner must endorse on the subpoena his default, sign his name thereto and return the same to the clerk of the circuit court of the county within five days thereafter, and such witness must be proceeded against in such court, in the name of the state, as if he were a defaulter therein, the endorsement of the coroner being presumptive evidence of the default.