safety
DNA breakthrough leads to arrest in 14-year-old Arlington cold case
Summary by Frisco News Editorial Desk · Based on reporting by Candace Sweat , NBC 5 Dallas-Fort Worth (KXAS) - Local
· July 20, 2026
· 2 min read
For more than a decade, one question remained unanswered: Who killed Irasema Chavez? Now, Arlington police and the FBI say advances in DNA technology have led to a major break in the 2012 cold case. Authorities announced the arrest of 42-year-old Mayra Velasquez, who is charged with capital murde...
Story provenance No corrections
Summary created by Frisco News Editorial Desk — automated, rule-governed Original reporting Candace Sweat, NBC 5 Dallas-Fort Worth (KXAS) - Local Original story Read at the source Source published Jul 20, 2026 Indexed here Jul 21, 2026 AI assistance Automated summary drawn from the source’s own published text Prepublication human review No — editorial rules, flagged-item review, and published samples
Every story comes with a passport. How we work · Corrections log
Key takeaway Authorities announced the arrest of 42-year-old Mayra Velasquez, who is charged with capital murder in the stabbing death of Chavez.
Why this matters in Frisco News
The arrest of Mayra Velasquez in the 2012 murder of Irasema Chavez brings a measure of closure to the Arlington community, but also raises questions about the potential for similar breakthroughs in other cold cases in the Dallas-Fort Worth area. As DNA technology continues to advance, it's likely that other local law enforcement agencies will explore partnerships with the FBI's Investigative Genetic Genealogy program to re-examine evidence in unsolved crimes. For Frisco residents, this development may prompt curiosity about the status of any cold cases within their own city limits and whether modern DNA analysis could be the key to solving them. The collaboration between Arlington police and the FBI serves as a model for other local agencies to follow, and it will be worth watching to see if this case sparks a new wave of investigations into long-unsolved crimes in the region.
About this story
Original reporting by NBC 5 Dallas-Fort Worth (KXAS) - Local . Frisco News surfaces reporting from trusted publishers and adds local editorial context so readers can quickly understand what a story means for their community. We attribute every source, link to the original report, and follow a documented editorial standards policy. To understand how stories are selected and reviewed, read our about page .
For the complete original report, visit NBC 5 Dallas-Fort Worth (KXAS) - Local . Have a tip or correction? Contact our newsroom .
Category: safety ·
Published: July 20, 2026 ·
Source: NBC 5 Dallas-Fort Worth (KXAS) - Local ·
Reading time: 2 min
Get more Frisco News stories like this
Free weekly briefing covering safety and other local news. Curated by our editorial team. No spam.
By subscribing you agree to our privacy policy . Unsubscribe anytime.
Frequently asked about this story
What is this story about? For more than a decade, one question remained unanswered: Who killed Irasema Chavez? Now, Arlington police and the FBI say advances in DNA technology have led to a major break in the 2012 cold case. Authorities announced the arrest of 42-year-old Mayra Velasquez, who is charged with capital murde...
When was this published? This article was first published on July 20, 2026 by NBC 5 Dallas-Fort Worth (KXAS) - Local and curated for Frisco News readers.
Who reported this story? This story was reported by Candace Sweat at NBC 5 Dallas-Fort Worth (KXAS) - Local. To learn more about how Frisco News selects and reviews stories, see our editorial standards .
Where can I find related coverage? See more safety coverage from Frisco News, or browse our daily briefing and topic hubs .
← Back to all news
More safety →
Today’s briefing
Subscribe to newsletter