The death of a man found unresponsive near the location of a party outside Bigfork early Saturday morning is under investigation, authorities say.  

The Flathead County Sheriff's Office learned of the discovery of the shivering and seemingly intoxicated man near Jewel Basin Road about 2:50 a.m., June 13, officials said. The people who found him initially moved him close to a fire for warmth and later attempted to bring him to emergency responders.  

The man lost signs of life along the way, authorities said. He was given CPR until medical personnel arrived.  

The body is undergoing an autopsy, but investigators reported finding no signs of trauma. Detectives are interviewing witnesses and reviewing evidence to determine the circumstances leading up to the man's death.  

Authorities did not identify the man.  

Officials said the man was found in a grassy area near where a group of minors and young adults had hosted a party earlier in the evening. It was not immediately clear if the man was involved in the party or discovered by the revelers. 

News Editor Derrick Perkins can be reached at 406-758-4430 or [email protected]. If you value local journalism, pledge your support at dailyinterlake.com/support.