A roommate called first responders after having discovered Thalia Chaverria unresponsive at their residence in the 2400 block of El Dorado Court in Las Cruces about 7 a.m. Monday, authorities said.
Suicide and foul play were not immediately suspected.
"There's nothing that would make it appear to be suicide and no evidence of foul play," police spokesman Danny Trujillo told NBC News on Thursday.
She was an anchor on the back line for New Mexico State, which last season won its first conference title in school history. It posted three straight shutouts in the Western Athletic Conference Tournament to punch its ticket to the postseason.
She started 20 of 21 matches last season and played 1,787 minutes, fourth most on the team.
“The sudden loss of Thalia has completely rocked our Aggie soccer families’ world," coach Rob Baarts said in a statement. "T was an inspiration and rock to this team. She will be missed but not forgotten. Her spirit will be with us everyday, on and off the pitch. I will always love you T!”
Chaverria's death is another difficult moment for the New Mexico State athletic department this year.
The school abruptly canceled the men's basketball season this year and fired its coach in the wake of hazing allegations and the shooting death of a student from its rival, the University of New Mexico.