Despite talking with the victim and several witnesses, police say they were unable to develop a suspect profile.
Assaulting a utility worker is an enhanced felony in Michigan and can result in additional prison time.
An 71-year-old eastern Michigan man could end up spending the rest of his life behind bars.
The incident unfolded early Friday morning in a neighborhood just west of Rosa Parks Boulevard and Chicago Boulevard.
Police say a woman and her grandchild are dead following an early-morning shooting in Flint.
Detroit police are searching for a suspect who robbed a man at gunpoint and then shot the victim after he complied.
Several people were inside the house when the suspects barged in and opened fire.
The boy and his 11-year-old brother were playing with the weapon in a backyard. Police say the older boy accidentally shot the toddler in the face.
Two workers were in the process of repossessing a Chrysler 300 when the 69-year-old man stepped outside in his underwear and opened fire, striking one of the workers in the leg.
A 44-year-old man who was just doing his job, repossessing a vehicle in Southfield, is recovering in the hospital after being shot in the leg.