Every coroner, having been notified of the dead body of any person, supposed to have come to his or her death by violence or casualty, being found within his county, may make out his or her warrant, directed to the sheriff of the county where the dead body is found, requiring him or her forthwith to summon a jury of six good and lawful citizens of the county, to appear before such coroner, at the time and place in his or her warrant expressed, and to inquire how and by whom he or she came to his or her death.