ALLEGAN COUNTY, MI – An Allegan-area man who was found unconscious after being outside several hours died of hypothermia and acute intoxication, a sheriff’s investigator said.

Michael Long was spotted early Saturday, Nov. 15, on the side of 32nd Street south of 102nd Avenue. Sheriff’s deputies responded just after 4 a.m. and found the man had no pulse. Police used an automated external defibrillator, or AED, six times and performed CPR.

Paramedics used an AED four times and performed CPR on the way to the hospital.

Long died Monday, Nov. 17.

A homeowner told police that she'd told Long and others to leave a party early Saturday morning.

Witnesses said Long started walking home. He was found about a quarter-mile from his house. The temperature at the time was below freezing.

Allegan sheriff's Capt. Mike Larsen said police interviewed numerous witnesses and used three search warrants in investigating the death. His family has suggested that he was killed.

Larsen said the autopsy showed no signs that the death occurred from an assault. There were also no signs that he had been thrown from a vehicle.

He lived about a half-mile from the party.

Larsen, in charge of the Detective Bureau, said investigators spent four days investigating before determining that no crime occurred.

John Agar covers crime for MLive/Grand Rapids Press E-mail John Agar: jagar@mlive.com and follow him on Twitter at twitter.com/ReporterJAgar