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Metro police officers are shown outside a Walmart after a shooting in Las Vegas, June 8, 2014. Reuters

Police in Albuquerque, New Mexico, announced the identity of the decapitated man found behind a Walmart in the northeastern part of the city Monday as Clifford Miller, 42, of McAlester, Oklahoma.

A security guard discovered Clifford’s body after midnight Saturday. He was naked and with his genitals had been removed, USA Today reported Tuesday.

Fred Duran, a representative from Albuquerque law enforcement, said Miller traveled to New Mexico two months ago in hopes of finding employment in Albuquerque.

Local police are still trying to determine what happened to Miller in the days leading up to his grisly death, including the motive. An autopsy on the body is pending. It was not immediately clear whether Miller was decapitated before or after he died.

Investigators do not believe Miller was killed in the same place the security guard discovered his body, but have not said where his death may have occurred. Police said they have a suspect in the investigation and urged anyone with relevant information to alert the authorities.

“What we know is that his body was put there by someone, we don’t know who, we don’t know how,” Duran told the New York Daily News.

Miller was the father of two girls. His 11-year-old son died in car accident nearly four years ago. Chandel Fults, the sister of Miller’s ex-wife, said most of Miller’s extended family members had been notified about his death by Tuesday and were having a difficult time fathoming it.

“[Miller’s ex-wife] was crying when I talked to her,” Fults said. “I had to tell her oldest daughter myself. How would you take it if you had to be told your dad died?”

While Duran said investigators were still trying to identify the body on Monday, Jeff Daniels, the communication officer for the Pittsburg County (New Mexico) Sheriff’s Office said law enforcement officers contacted Miller’s father late Sunday night.

Fults said Miller had been working for a roofing company in his hometown of McAlester, Oklahoma, before moving to New Mexico. She said she didn’t know what job Miller traveled to Albuquerque to pursue.

Miller had a history with law enforcement. He had been charged with multiple misdemeanors and felony possession of marijuana