DALLAS — A decades-old murder case that resulted in a wrongful conviction has reached a new turning point after DNA evidence helped investigators identify Michael Nevarez as the killer of 21-year-old Damond Wittman, while Martin Santillan spent more than 25 years in prison for a crime he did not commit. Nevarez, 45, pleaded guilty to murder in October 2026 and was sentenced by a jury to 21 years in prison for Wittman’s July 14, 1997, killing outside a nightclub in Dallas’ Deep Ellum entertainment district, according to CBS Texas.

The sentencing brings a measure of accountability for Wittman’s family while underscoring the devastating consequences of mistaken eyewitness identification and the importance of advances in forensic science. It also highlights how post-conviction DNA testing can expose errors in the criminal justice system and help investigators pursue the person responsible for a crime.

DNA testing provides a breakthrough

Wittman was outside a Deep Ellum nightclub with friends when a teenager approached the group and asked for a cigarette. After Wittman handed him one, the assailant allegedly pulled a gun and demanded money. Wittman fought back and was shot multiple times. He later died at Baylor University Medical Center.

Investigators recovered a bloodstained Dallas Stars hockey jersey a few blocks from the shooting. Witnesses had described the gunman as wearing a similar jersey, making the garment an important piece of physical evidence.

Santillan, who was in his early 20s when the crime occurred, was convicted of capital murder in 1998 and sentenced to life in prison. He consistently maintained his innocence. The prosecution’s case relied heavily on a single eyewitness identification, while other witnesses did not identify him as the shooter.

Centurion Ministries Investigates

Centurion Ministries, a nonprofit organization that investigates wrongful convictions, brought Santillan’s case to the Dallas County District Attorney’s Office Conviction Integrity Unit in 2008. Initial DNA testing, including additional testing in 2014, did not produce conclusive results because of the forensic technology available at the time.

In 2021, investigators revisited the evidence and submitted the jersey for testing with newer, more sensitive DNA methods. Analysts identified DNA profiles belonging to previously unknown contributors in biological material recovered from the jersey’s sleeve cuffs.

A search of the FBI’s Combined DNA Index System, known as CODIS, identified one contributor. Investigators traced that profile to a woman who provided information about a former boyfriend who had worn a Dallas Stars jersey around the time of the murder.

Suspect Identified: Wrongful Conviction Proven

That information helped authorities identify Nevarez as a suspect. Investigators subsequently pursued the case across state lines, obtained a DNA sample that advanced the investigation and arrested him in Colorado.

Crucially, the testing also excluded Santillan as a contributor to the relevant DNA evidence. His DNA was not found on the jersey associated with the gunman, undermining the case that had kept him imprisoned for decades.

The DNA evidence did more than challenge the original conviction: It generated a new investigative lead that helped authorities identify another suspect. The case demonstrates how improved DNA analysis, database searches and follow-up interviews can work together to reopen an investigation that once appeared resolved.

Here, the combination of DNA analysis, CODIS database results, witness information and follow-up investigation helped identify Nevarez and establish that Santillan had been wrongly convicted.

Exoneration after 25 years behind bars

Santillan was released from prison in December 2022 as his conviction was being challenged. In February 2023, the Texas Court of Criminal Appeals granted relief that vacated his conviction and sent the case back to Dallas County. Prosecutors dismissed the charge in March 2023, formally clearing him.

Dallas County Criminal District Attorney John Creuzot said the outcome reflected the office’s responsibility to correct past injustices and hold the responsible person accountable. He also acknowledged the extraordinary harm caused by Santillan’s wrongful imprisonment.

At the time of his release, Santillan celebrated outside the courthouse with family members and friends. Under his court sweater, he wore a T-shirt bearing the words “I didn’t do it.” His freedom brought joy, but the years he had lost could not be restored.

His sister, Mayte Cantu, described the experience as deeply painful, particularly because Santillan had missed family milestones and the deaths of relatives, including their mother.

For Santillan and his family, the exoneration marked the end of a long legal battle. For Wittman’s loved ones, the prosecution of Nevarez represented a renewed effort to resolve a murder that had remained unresolved for nearly three decades.

Legal implications for wrongful convictions

The case illustrates several challenges facing the criminal justice system. Eyewitness identification can be persuasive to juries, but memory, viewing conditions and the circumstances surrounding an identification can affect its reliability. When a conviction rests heavily on a single identification, independent corroborating evidence can be especially important.

The case also demonstrates why access to post-conviction DNA testing matters. Biological evidence collected decades earlier may become more useful as testing methods improve. However, DNA results must be interpreted carefully: finding a contributor’s DNA can generate an investigative lead, while excluding a person from a sample can undermine a theory of guilt without, by itself, proving who committed the crime.

The Search For Truth Never Ends

The case further highlights the role of conviction integrity units, which review credible claims of wrongful convictions and reassess evidence as new information becomes available. Their work can require cooperation among prosecutors, police, forensic laboratories, defense attorneys and innocence organizations.

Although Nevarez’s sentence brings a new legal outcome in Wittman’s killing, it cannot compensate Santillan for more than 25 years of lost freedom or restore the family experiences he missed. The case remains a sobering reminder that a conviction is not necessarily the end of the search for truth.

Continued review of evidence, reliable forensic methods and a willingness to correct mistakes are essential to ensuring that the criminal justice system holds the right person accountable.