Police said a woman was found fatally wounded in an apartment parking lot shortly before a man's body was found after a fire at her former home in the St. Louis suburb of Wildwood.
Officials told the St. Louis Post-Dispatch that the two incidents were linked together.
Police found the woman's body around 12:45 a.m. Sunday after shots were reported fired at an apartment complex in Chesterfield, Missouri. About seven miles away, a house fire was reported at the woman's former residence in Wildwood, which is about 30 miles west of St. Louis.
Chesterfield Police Lt. Christopher Connelly said there were domestic issues between the couple and they were not living together. The woman filed for divorce in August.
Autopsies are being performed on both the man and the woman. Police released few details about their deaths Sunday morning.
Neighbor Brian Long said it took several hours for firefighters to control the fire.