Authorities are investigating four separate homicides over the course of three days in the city of Saginaw and nearby Saginaw Township.
MLive.com reports the shooting deaths began Friday.
Investigators and family members say the deaths include Friday's shooting of 23-year-old Antionio D. Rincher in Saginaw and Friday's shooting of 45-year-old Greg Bulger in Saginaw. On Saturday, officials say 28-year-old Ike Liggins-Coleman was killed.
Those deaths bring the city of Saginaw's total to 29 homicides this year. Of those, 25 have been ruled criminal. It's the city's deadliest year in the past two decades.
And on Sunday night, police discovered the body of 28-year-old Larry Marquell Mixon inside of a car parked in Saginaw Township.