A judge ordered a 10- to 25-year prison sentence Wednesday for a defendant who admitted to killing a man found dead in a pickup truck on Interstate 15.

Joseph De Luna, 28, pleaded guilty in August to a count of second-degree murder in connection with the fatal shooting of Jaime Zamora Gamez , whose body was discovered north of Cheyenne Avenue in the southbound lanes on the morning of March 2. Gamez, who was 21, had been shot six times.

“His life was cut short because of the defendant’s choices,” said Deputy District Attorney Sammy Lamb. “The defendant chose to use cocaine on the night of the murder, which led him to be in a paranoid state that ultimately caused him to take the life of Jaime.”

Defense attorney Josh Tomsheck told District Judge Michelle Leavitt the killing was “clearly se

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