A resident at Genesee County fired a tiny cannon-type apparatus from the garden around 7:30 p.m. to observe the infant's impending birth, according to Michigan State Police.
"The homeowner had bought the cannon with an auction before the event and had fired the cannon a few times before. The cannon is intended to make a significant flash, a loud sound and make smoke," state police said in a statement.
The cannon allegedly burst and exploded Evan Thomas Silva, 26, of Hartland, that had been standing 10 to 15 feet off, authorities said. Three parked vehicles along with the garage in which the baby shower was held were also affected.
"The cannon didn't comprise some other projectiles, but it's supposed that the gun powder packed to the device resulted in the cannon to crack," the authorities said.
The victim was rushed into Hurley Medical Center where he later died from his injuries, according to authorities. It isn't currently known how Silva is closely associated with the homeowner.
Officials are exploring and the situation will be transmitted into the Genesee County Prosecutor for inspection, according to authorities.