Names of those killed Saturday were being withheld until families could be notified.
Waveland Police tell WLOX-TV (http://bit.ly/I4Sf5E) they believe the man who fell had shot three people in a domestic dispute in Bay St. Louis. Coroner Jim Faul says two were husband and wife.
Meanwhile, deputies are investigating the shooting death of a man in front of a Waveland house.
The fifth death was a man shot in the head while in bed in Kiln. A woman living with him, 37-year-old Virginia Hill, has been charged with murder.
A dispatcher says there won't be any updates until Monday.