ALBUQUERQUE, N.M. — Escaped prisoner John McCluskey killed a retired Oklahoma couple in cold blood while he was on the run and should be convicted of capital murder for his 2010 crime spree, the prosecution said in closing arguments Tuesday.

"This is a man who was willing to shoot and kill to get what he wants," Assistant U.S. Attorney Linda Mott told an Albuquerque jury.

McCluskey is being tried on federal carjacking, murder and other charges in the August 2010 deaths of Gary and Linda Haas of Tecumseh, Okla. The couple's charred remains were found among the wreckage of their burned-out travel trailer on a remote ranch in eastern New Mexico.

Mott told the jurors that the only possible verdict after a monthlong trial is guilty on all counts. Among the evidence, she said, are fingerprints and DNA on the murder weapon and inside the Haases stolen pickup truck.

"He did it in cold blood, "she said. "He did it to take their stuff. He did it not to leave witnesses and he did it to get away."

Prosecutors rested their case last week after calling dozens of witnesses, including McCluskey's cousin and girlfriend, Casslyn Welch, and his former prison bunkmate, Tracy Province. Both alleged in testimony that McCluskey was the triggerman.

Defense attorneys, without calling any witnesses of their own, tried to discredit Welch and Province. They accuse the two of cooperating with prosecutors in exchange for leniency. Welch and Province pleaded guilty last year and face life sentences.

McCluskey, if convicted, faces either life in prison or the death penalty.

The Haases were killed three days after Welch said she helped McCluskey, Province and another inmate escape from a privately run, medium security prison near Kingman, Ariz. One of the inmates was caught a day later in Colorado. The search for Welch, McCluskey and Province sparked a nationwide manhunt.

According to testimony, the trio targeted the Haases for their truck and trailer after having fled through three states in a cramped car without air conditioning. Welch testified the plan was never to kill anyone, just to "get off the grid" and go into hiding.

Prosecutors contend that McCluskey had intentions of harming the Haases from the moment he and his alleged accomplices spotted the retired couple at a rest stop.

"He wanted that vehicle. He wanted to stay on the run. And the only way he could do that was to ultimately eliminate the Haases," prosecutor Mike Warbel told the judge Thursday.

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