July 8 marked the nine-year anniversary of a Weld County cold case, which involved the homicide of a 30-year-old man. With the recent anniversary, the sheriff's office is asking the public to come forward with any tips or information that might help to solve this case.

Just before 10 p.m. on July 8, 2011, 30-year-old Armando Mata-Magallanes of Denver, was reported missing by Brenda De Anda. According to De Anda, she had last seen Mata-Magallanes when he left for work around 5:30 a.m. that morning. He was supposed to return home at 2:30 p.m. but never did.


De Anda also told investigators that sometime after Mata-Magallanes left for work, he called saying he needed money and instructed her to sell his truck. When De Anda asked why a Spanish speaking man got on the phone and told her she needed to sell the truck for $30,000. The unknown man said they would call back at 11:30 a.m. on July 9 and then hung up on De Anda.

On July 9, 2011, an employee with the Burlington Northern Santa Fe Railroad called the Weld County Sheriff's Office to report a body near the east side of I-76, about one-half mile east of mile marker 27 northeast of Lochbuie. When deputies arrived at this location, they confirmed a deceased man.

The body was later identified as Armando Mata-Magallanes. His death was ruled as a homicide by gunshot.

Investigators determined that Mata-Magallanes never actually showed up for work on July 8. He was last seen driving a 1983 blue Volkswagen Rabbit that was later recovered in the 1600 block of 29th Avenue in Denver.


Anyone with information about this cold case is asked to call Detective Byron Kastilahn at (970) 400-2827 or email bkastilahn@weldgov.com. In addition, anyone with tips can call the Weld County Sheriff's Office at (970) 356-4015 or Northern Colorado Crime Stoppers at 1-800-222-TIPS (8477).

Northern Colorado's Most Puzzling Cold Cases

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