Autopsy results confirm the body found in Mark Twain National Forest in Carter County, MO is Frederic Byrne of Big Rapids.
The autopsy was completed at Mineral Area Hospital in Farmington, MO and revealed no evidence of criminal activity.
7&4 News is told the investigation is closed.
Anyone with information is asked to contact the Big Rapids Department of Public Safety.
Byrnes, 49, went missing Feb. 12, after he dropped his son off at Hope College in Holland and visited his mother.
His mother said he mentioned as he was leaving that he was going to pick up a Valentine's Day gift for his wife.