A man died Monday in a house fire in southeastern Minnesota.
The blaze was reported to authorities about 2:15 p.m. in the 500 block of NW. 2nd Avenue in Spring Grove, the Houston County Sheriff’s Office said.
Responders entered the home and found the body of of 62-year-old Karl Onstad, who lived alone, the Sheriff’s Office said.
An autopsy was finished Tuesday and concluded there was no foul play involved in Onstad’s death.
The cause of the fire remains under investigation.
![BRIAN PETERSON • brianp@startribune.com INTERNATIONAL FALLS, MN - January 31-Feb. 2nd ] The Arrowhead 135 Ultra Marathon, from International Falls to Tower Minnesota, follows the scenic and rugged Arrowhead State Snowmobile Trail and attracts some of the best ultra-athletes in the world. Competitiers can Bike, run or ski the 135 mile race that challenges the body and the mind and presents participants with some of the coldest conditions in ultra marathon racing. (IN THIS PHOTO) Being alone and c](https://arc.stimg.co/startribunemedia/TQBYYJEXPK7GJUOKY5IXJWD6I4.jpg?&w=252&ar=3:2&fit=crop)