Updated: 03/18/2014 7:02 PM
Created: 03/18/2014 5:17 PM KAALtv.com
(ABC 6 NEWS) -- Autopsy results show a 57-year-old Winona man found dead outside a friend's home in Rollingstone died due to blood loss and hypothermia.
The Winona County Sheriff says the man was at a bar before he sustained his injuries. He had a cut lip, ear and large piece of his scalp was missing.
It is still unclear what caused the man's injuries.The sheriff says there are no signs of a hit and run or fight. A trail of blood was nearly two blocks long.
Authorities have not released the man's identity. The investigation continues.