âI already told you guys I did it,â Ramon Luis Rivera told detectives last year, after he allegedly stabbed and stomped a fellow inmate to death at the Utah State Prison. Two recorded interviews between Rivera and Unified Police detectives were played a three-day preliminary hearing in 3rd District Court, at the end of which, on Thursday, Rivera was ordered to stand trial. Rivera, 31, was charged with first-degree felony aggravated murder and two counts of second-degree felony possession of it... <iframe src="http://www.sltrib.com/csp/mediapool/sites/sltrib/pages/garss.csp" height="1" width="1" > </frame>