Police say they will spend several days combing an area in west Las Cruces where a horseback rider found skeletal remains.
The Las Cruces Sun-News reports the remains were found Sunday afternoon near U.S. 70 and Interstate 10.
Las Cruces police spokesman Detective Frank Torres says the remains appear to be adult sized, but the gender and identity are unknown.
He says there were no clothes or identifiers nearby, and the body has "been out for quite a period of time."
New Mexico State Police spokesman Rob McDonald said the remains have been sent to the Office of the Medical Investigator for testing.
Copyright 2013 The Associated Press.