A man suspected of fatally shooting his wife and critically injuring a Good Samaritan died of a self-inflicted wound in Valley Village Monday in what appears to be a murder-suicide, officials said.

Officers responded around 10:30 a.m. Monday to reports of shots fired in the 12000 block of Weddington Drive, according to the Los Angeles Police Department.

Neighbors told NBC4 that a woman was a shot by her husband, and that the two had a troubled marriage for years.

"They argued constantly, all the time. They were fighting and bickering back and forth," neighbor Robin Torell said. "And it just escalated more and more and more and as days went by, it just got worse."

Torell said that the husband had told him he was furious with his wife for her alleged drug abuse problem.

Another woman was in critical condition after being shot by the man, according to Los Angeles Fire Capt. Jaime Moore. That woman was a neighbor who had reportedly come to the aid of the wife.

A large police presence was visible outside the Weddington Square apartments and on a balcony of the second story at the time of the incident.

SWAT officers could be seen outside the apartment complex as a stretcher was taken inside.

Authorities remained on scene around 12:30 p.m. The coroner left the scene around 5 p.m. Monday.

Traffic was completely shut down on westbound Magnolia Boulevard and other streets near the apartment as authorities continued their investigation.

An officer suffered a minor injury during the search of the apartment complex.

Neighbors told NBC4 that the couple had a teenage daughter who was away at school at the time of the incident