UPDATE | Sept. 2 — In a Tuesday update, the Adams County Sheriff's Office said 37-year-old Alex Anthony Martinez was arrested on Thursday. He was wanted in connection with this homicide at the Chaparral Village community.
Martinez faces one count of first-degree murder and tampering with physical evidence.
The victim was identified as 27-year-old Johnathan Dezmond Romero. He had been shot.
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A homicide investigation is underway at the Chaparral Village community off E. 88th Ave. and Welby Road, according to the Adams County Sheriff's Office.
Welby Road is closed from E. 86th Ave to E. 88th Ave. The Adams County Sheriff's Office asks morning commuters to find alternative routes at this time.
There's no active threat to the public, Adams County Sheriff's Office Public Information Officer Nicole Narverud confirmed during a news conference Thursday morning.
We are working an active investigation of a homicide in the area of E 88th Ave and Welby Rd., at the Chaparral Village community. Welby Rd is closed from E 86th Ave to E 88th Ave. please seek alternate routes at this time. Deputies and detectives are on this very active scene. pic.twitter.com/vOYkv36a3G
— Adams County Sheriff's Office (Colorado) (@AdamsCoSheriff) August 28, 2025
One adult man died, but it's unclear at this time what led up to his death, Narverud said.
Around 3:45 a.m., a 911 call came in reporting one man who was shot and the Thornton Police Department responded, finding one man with a gunshot wound out side Chaparral Village. Thornton PD called the Adams County Sheriff's Office as the homicide occurred in that jurisdiction.
Narverud said investigators have an idea who the suspect is and are searching for that person now. The Adams County Sheriff's Office said it hopes to have more information it can release publicly in the next couple of hours.
