The body of missing 20-year-old Dalton Layng was found Monday afternoon. 

The Rapid City native was last seen early Sunday morning. Search and rescue teams had been looking for him since Sunday afternoon. 

Law enforcement found his body in a field near the intersection of 151st Ave. and I-90 around 1 p.m. (MT) on Monday.

An autopsy will be scheduled to determine the cause of death, authorities said.