Officials have identified the victim as 77-year-old James Owens, the owner of Owens Contracting.
A suspect is in custody and charges are expected later today.
Authorities say they have arrested a person of interest and he is lodged in the Saginaw County jail. Lt. Brian Cole with Michigan State Police say it is the same person police were questioning Wednesday afternoon.
Michigan State Police are investigating a homicide in the 5300 block of Dixie Highway in Bridgeport Township.
Officials say an employee found a man's body inside the home around 2p.m. Wednesday.
Police say the victim lived in the home that also served as his business.
Earlier, officers were dispatched to the Speedway in the 5400 block of Dixie Highway Wednesday afternoon. Authorities have towed a white Buick Riviera from the scene to the crime lab.
It's unclear if the two scenes are related at this time.
Officials are on the scene collecting evidence. Stay with NBC25 for new developments.