Autopsy results indicate he was shot more than twice in the head with a small-caliber gun.
Marquez-Villa's body was found Saturday by Toppenish Police in the 900 block of Washington Street. He most recently lived in Whatcom County.
Deputies won't provide any more information about his death while they investigate.
Investigators have not identified any suspects.
If you have any information concerning the incident or identity of the victim, contact the Yakima Sheriff's Office at 574-2500.