Authorities have released the name of a man found dead inside a Marshalltown house. Marshalltown police say 59-year-old David Warnell of Garwin was killed Tuesday when he was fatally shot in the head. Two Marshalltown men have been charged in the slaying. Online court records say 30-year-old Jeremy Gartin is charged with first-degree murder and carrying a concealed weapon. Fifty-five-year-old Max Nelson Junior is charged with theft, abuse of a corpse and being an accessory. Both men were initially detained as material witnesses. Nelson and Gartin remain in custody.