Mayra Velasquez denies killing Irasema Chavez as prosecutors prepare a case built partly on DNA evidence revived through genetic genealogy.
ARLINGTON, Texas — Mayra Velasquez is out of jail on a $450,000 bond, wearing a GPS monitor and publicly declaring that she did not kill her friend Irasema Chavez, setting up an increasingly sharp dispute over DNA, surveillance footage and other evidence in a 2012 Arlington homicide that went unsolved for more than 14 years.
The prosecution and defense now agree on several basic facts but sharply differ over what those facts mean. Chavez, 32, was killed inside her apartment in January 2012 and suffered more than 100 stab wounds. Velasquez and Chavez knew each other, and Velasquez had previously visited the apartment. A blood droplet found there contained DNA that was not Chavez’s. Police say modern genetic-genealogy work led them to Velasquez and that a later comparison confirmed the blood as hers. The defense says the DNA does not establish when the blood was deposited or who committed the killing.
Velasquez made that disagreement personal when she appeared with her lawyers after her release from custody. “I am Mayra Velasquez. I did not do this,” she said in a brief statement. She called Chavez her friend and said she could not have harmed her. Reporters were not permitted to question Velasquez during the appearance. Her attorneys said they arranged the statement because they believe the public portrayal of their client has not reflected what they consider major weaknesses in the case.
The defense’s first major challenge centers on the blood droplet that police describe as a key piece of evidence. Investigators found it on a television stand in Chavez’s apartment during the original investigation. Testing established a female DNA profile, but no match was found in available criminal databases. More than a decade later, investigators took that profile to the FBI’s Investigative Genetic Genealogy program. The FBI used genealogy research to identify possible relatives and build a family tree, ultimately giving Arlington detectives a lead that pointed toward Velasquez.
Police then sought a direct DNA comparison rather than relying on the family-tree analysis. According to law enforcement and reports based on the arrest affidavit, officers watched Velasquez as she met friends for lunch and collected discarded utensils and dishes after she left. Testing of material from those items produced a DNA profile that police say matched the blood found in Chavez’s apartment. Investigators believe Velasquez may have cut herself during the attack, a possibility they say can occur when someone uses a knife repeatedly. That theory remains an allegation and has not been proved at trial.
Velasquez’s lawyers say the prosecution cannot simply equate a DNA match with proof of murder because their client had a reason to have been inside the apartment before the killing. They have also challenged the description of the droplet in investigative records. The affidavit, according to the defense, described the blood as appearing fresh, partially wet or glistening even though the investigative timeline placed the suspected killing many hours before Chavez was discovered. Police have stood by their description and said the droplet appeared similar to other blood at the scene. The dispute could become important because the timing of the deposit may affect how jurors view the prosecution’s interpretation of the DNA.
A second conflict concerns a surveillance recording that police released during the original investigation. The video shows a person in loose clothing and a hood approaching or entering the apartment property before Chavez was found dead. Defense attorneys say witnesses have told them investigators originally believed they were looking for a man and argue that the figure’s body type does not resemble Velasquez. Arlington police dispute the assertion that the department identified the person as male. The agency’s 2012 public material described the figure only as a person, and homicide Detective Tracey Dixon has said investigators now are confident the video shows Velasquez.
Other evidence has received less public scrutiny because police have not disclosed it in detail. Dixon has said detectives possess information from Chavez’s cellphone and statements gathered during an interview with Velasquez. Police have indicated those materials will form part of the case, but they have not explained exactly what the cellphone contains or what Velasquez said that they believe is significant. That leaves an incomplete public record: authorities have expressed certainty about the suspect while some of the evidence they cite remains unavailable for independent examination.
The question of motive is similarly unresolved. Police have described Velasquez and Chavez as close friends. An arrest affidavit cited a tip that Velasquez’s husband was jealous of their close relationship around the time Chavez was killed. Authorities have not said that jealousy has been established as the motive, and investigators continue to describe the motive as unclear. Velasquez’s attorneys, meanwhile, have suggested that police should examine another woman who knew Chavez and have referred to a reported breakup involving Chavez on the day of the killing. That is a defense theory, not a finding by investigators or a court.
The capital murder charge adds another layer to the fight. Police reported that a television was missing from Chavez’s apartment, and Velasquez’s attorneys have said the alleged theft is part of why the homicide is being prosecuted as a capital offense. Velasquez was initially denied bond after her July arrest. Her lawyers then filed a writ of habeas corpus challenging her detention, arguing that the court had not adequately established a constitutional basis for holding her without bail. They emphasized that she had no criminal record, had lived openly in North Texas and was not, in their view, a danger or a serious flight risk.
The bond dispute produced a concrete change in Velasquez’s status before the murder allegation itself had been resolved. She was granted a $450,000 bond and released in late July. As conditions of release, she surrendered her passport and is subject to GPS monitoring and geographic restrictions. Those conditions address the risk that had been raised by her extensive history of international travel. Her work and personal life during the years after Chavez’s death became part of public discussion after the arrest because she had established a career in real estate, raised a family and traveled widely without being charged with another crime.
The contrast between that public life and the accusation attracted attention, but it does not answer the evidentiary questions now before the legal system. A former professional colleague described Velasquez as helpful, polite and family-oriented. Character impressions from colleagues do not determine guilt or innocence, just as the severity of Chavez’s death does not establish who caused it. The key questions are narrower: whether the blood can be reliably tied to the time of the killing, whether the surveillance footage supports the police identification, what the undisclosed cellphone and interview evidence shows and whether prosecutors can prove the elements of the charge beyond a reasonable doubt.
Chavez’s family has waited more than 14 years for the investigation to produce a defendant. Detective Dixon became emotional at a July news conference while discussing the moment investigators informed the family that an arrest had been made. Police Chief Al Jones praised detectives and crime-scene investigators for preserving evidence and continuing the case. For the family, the arrest represents a major development after years without an identified suspect. It is not, however, a verdict, and the defense has made clear that nearly every major inference drawn from the evidence will be contested.
As of Aug. 24, Velasquez remains charged with capital murder and free under bond conditions. She is presumed innocent unless proved guilty. Police say they are not seeking another suspect and remain confident in their case, while her lawyers say the real killer has not been identified. No publicly confirmed trial date has been announced, and the motive remains unresolved. The next phase will shift the case away from press conferences and public statements toward court proceedings where the DNA, video, investigative methods and competing explanations can be challenged under evidentiary rules.
Author note: Last updated August 24, 2026.