Boone County authorities are looking for a suspect connected to that killing just east of Columbia on Sunday.
Garland Wisley, 60, has been charged with 2nd degree murder and armed criminal action.
Deputies found 38-year-old John Albers shot to death at a home on Sarazen Drive near St. Charles Road and Demaret Drive on Sunday morning. Witnesses say Wisley shot Albers in the head during an argument over the gun.
Wisley already has active warrants, including one for drug possession.
(This story was last updated at 5:22 a.m. Wednesday.)