On July 21, 2015, 34-year-old Steven Michael Kauffman was found shot to death in the middle of a road near Gun Lake in Shelbyville, Michigan. His body lay near his silver SUV; witnesses reported hearing a gunshot but said such sounds were not uncommon in the area, and the gunfire did not prompt immediate alarm. A 911 call was made after Kauffman was discovered, but he was already dead when emergency crews arrived.

Authorities arrested 29-year-old Sigmund Floyd Rumpf of Hastings at his home a few miles from the scene and charged him with open murder and a felony firearms offense. Reports at arrest said Rumpf was intoxicated and he was held on a $750,000 bond. Rumpf’s defense later asserted the shooting was in self-defense, claiming he had intervened in an altercation between Kauffman and a female friend of Rumpf’s. The motive for the shooting and whether the two men knew each other had not been established at the time.

Does anyone have information about Kauffman’s movements that evening or about interactions between him and Rumpf?