Mississippi Code Title 99. Criminal Procedure § 99-11-21

Where the mortal stroke or other cause of death occurs or is given or administered in one county, and the death occurs in another county, the offender may be indicted and tried in either county; and so, also, if the mortal stroke or cause of death occur or be given or administered in another state or country and the death happen in this state, the offender may be indicted and tried in the county in which the death happened.