Arlington Network has confirmed a major development in local law enforcement. An Arlington cold case arrest has brought profound answers to a 14-year-old tragedy that has long haunted the community. On Monday, July 20, Arlington police arrested 42-year-old Mayra Velasquez, charging her with capital murder in the brutal 2012 killing of 32-year-old Irasema Chavez-Sanchez.
The Night of the Crime
The chilling timeline of events dates back to January 19, 2012. According to newly detailed court documents, Chavez-Sanchez was targeted in what police describe as a capital murder during the commission, or attempted commission, of a robbery.
In 2011, Chavez-Sanchez had installed surveillance cameras at her apartment in the 2700 block of South Collins Street after discovering a slashed tire on her vehicle. Detectives later recovered the digital video recorder, piecing together her final hours. Footage showed the victim arriving home that evening. Roughly four hours later, a figure wearing baggy sweatpants and a hooded sweatshirt knocked on her door. Chavez-Sanchez voluntarily let the individual inside. Less than 10 minutes later, the power to the apartment’s surveillance system was deliberately disconnected, abruptly ending the recording.
The following day, January 20, 2012, a family member discovered Chavez-Sanchez’s body covered in blood. The Tarrant County Medical Examiner’s Office ruled her death a homicide, revealing the gruesome detail that she had been stabbed more than 100 times.
Crime scene investigators meticulously documented the apartment, noting bloody shoeprints leading toward the victim’s bedroom television, a missing living room television, and the front door. Crucially, they discovered a quarter-sized fresh blood droplet on the lower shelf of the bedroom television stand. Testing confirmed the blood belonged to an unknown Hispanic female—not Chavez-Sanchez. Despite entering the profile into the Combined DNA Index System (CODIS), no match was found for over a decade.
A Breakthrough in Genetic Genealogy
For years, investigators released surveillance images and pursued countless leads between 2012 and 2024. The turning point arrived in December 2024 when additional DNA testing identified a relative of the unknown female contributor. By leveraging advanced forensic genetic genealogy, detectives built out a family lineage and identified Velasquez as a primary suspect.
Investigators soon learned that Velasquez and Chavez-Sanchez had been close friends in 2012, living less than four miles apart. Detectives had actually received a tip shortly after the homicide suggesting Velasquez’s husband was jealous of the two women’s relationship. At the time, police left a business card at the couple’s home, but neither Velasquez nor her husband ever contacted investigators.
The final puzzle piece fell into place on May 13, when undercover detectives conducting surveillance observed Velasquez eating with friends at a local restaurant. When she left, investigators collected two plastic forks, a plate, and a cup she had left on the table. A state crime laboratory confirmed that DNA recovered from one of those discarded forks was an exact match to the fresh blood droplet found near Chavez-Sanchez’s body 14 years prior.
Inter-Agency Collaboration and Next Steps
Velasquez, who reportedly has no prior criminal history, was taken into custody with the assistance of the FBI Dallas Field Office and the Dallas Police Department. Arlington police officials have worked tirelessly to bring this case to a resolution. To provide further insights, a joint news conference featuring the Arlington Police Department and the FBI is scheduled for Wednesday, July 22.
Community Impact and Local Guidance
This historic Arlington cold case arrest serves as a powerful reminder of the dedication displayed by our local police and federal partners. Resolving the 2012 killing of Irasema Chavez-Sanchez not only brings delayed justice to grieving loved ones but also significantly reinforces public safety across the city.
- Support Ongoing Investigations: Even the smallest detail, such as an old tip or suspicion, can solve a major crime. If you have any knowledge regarding unsolved local cases, contact the Arlington Police Department.
- Understand Genetic Genealogy: Modern DNA analysis is a highly effective tool for public safety. It allows investigators to trace familial links and identify suspects who successfully evade traditional criminal databases.
- Stay Vigilant: Always remain aware of your surroundings, utilizing tools like residential surveillance responsibly, and report suspicious behavior. Community cooperation is vital for maintaining a secure environment.
For more local updates, visit Arlington Network.
