The first shooting Thursday occurred at a home in Lockport, where Lafourche Parish Councilman Louis Phillip Goaux was injured and his wife Susa was killed, the Lafourche Parish Sheriff's Office said in a release Friday.
Killed in the second shooting in Raceland was Milton Bourgeois, an administrator at Ochsner St. Anne Hospital, the sheriff's office said.
Authorities in Terrebonne Parish also discovered the body of Denise Freeman, wife of suspect Ben Edward Freeman, at their residence in Houma. The sheriff's office said the cause of death for the woman was unknown.
Goaux, his daughter and Bougeois' wife were injured and taken to area hospitals for treatment, officials said.
The 38-year-old suspect was found dead in his vehicle of a self-inflicted gunshot wound, the Lafourche Parish Sheriff's Office said.
The sheriff's office said deputies learned Freeman was once married to a daughter of the Gouaxes and once worked at Ochsner St. Anne Hospital. During the search for Freeman, three area hospitals -- Ochsner St. Anne Hospital, Thibodaux Regional Medical Center and Terrebonne General Medical Center -- were locked down after it was learned that Freeman worked at each of them in the past few years.