Arlington police say a long-dormant murder case has finally produced an arrest, with detectives taking a woman into custody in connection with the 2012 killing of Irasema Chavez, who was found in her apartment with roughly 100 stab wounds. The suspect, identified by authorities as Mayra Velasquez, was arrested this month on suspicion of capital murder after investigators revisited old evidence and followed up on new forensic leads in the cold case.
Velasquez, who investigators say was 27 at the time of the killing, was booked into the Tarrant County Jail following a July 16 arrest, and a state district court judge denied bond, according to the Fort Worth Star-Telegram. Authorities told the outlet they honed in on Velasquez after additional testing on evidence and other corroborating information emerged, which they say helped solidify the basis for the arrest. Prosecutors are now reviewing the case file as it moves toward potential formal charges.
Cold-case details
The Arlington Police Department's cold-case page notes that Chavez, 32, was discovered dead inside her Aspenwood Apartments unit on January 20, 2012, at 2714 S. Collins St. #416 (Arlington Police Department). Earlier coverage reported that surveillance footage had captured an unidentified person at her door the night before her body was found, and local media at the time urged the public to help identify that individual, as reported by The Dallas Morning News. The department continues to list the case on its cold-cases roster and says it is still seeking information from the public.
Forensic leads and a DNA "snapshot"
Detectives said a single drop of fresh blood on Chavez's nightstand yielded a DNA profile that did not match the victim or a girlfriend. Investigators later hired a Virginia-based DNA phenotyping company to create a composite image from that genetic material, which they circulated publicly and which authorities say resembled Velasquez. Surveillance video and other corroborating items were also collected and, alongside the DNA-related leads, helped steer the investigation, according to the Fort Worth Star-Telegram. DNA phenotyping, the practice of predicting physical traits from DNA, is presented by providers as a tool to generate leads rather than definitive proof. Parabon Nanolabs is one company that offers these "snapshot" services to law enforcement agencies.
What's next
Police say they plan to hold a press conference with the FBI on Wednesday, where detectives are expected to walk through the evidence and field questions about the arrest. Velasquez remains in custody following the capital murder arrest; officials note that an arrest is an allegation, and the defendant is presumed innocent unless and until proven guilty in court. Prosecutors will decide whether to formally file charges and schedule trial dates as the case proceeds through the Tarrant County court system.
Legal context
Under Texas law, capital murder is the most serious criminal charge and can carry a possible death sentence or life in prison without parole if there is a conviction. Defense attorneys frequently challenge newer forensic tools and seek detailed records on laboratory work and investigative procedures. In this case, the coming phase is expected to feature pretrial motions and hearings as both sides prepare for a potential prosecution.
How to help
The Arlington Police Department is asking anyone with information about the January 2012 killing to contact investigators or Crime Stoppers. Tips can be submitted anonymously and may qualify for a reward. Detectives say that community input, combined with forensic breakthroughs, often plays a crucial role in breathing new life into long-running cold cases.
