10/09/2026
Colorado DNA Analyst Sentenced to 10 Years After Manipulating Evidence in Criminal Cases
A former Colorado forensic analyst has been sentenced to 10 years in prison after authorities say she manipulated DNA data in criminal cases, misconduct that ultimately affected prosecutions and even helped lead to a murder conviction being vacated.
Yvonne “Missy” Woods, a longtime DNA analyst with the Colorado Bureau of Investigation, was sentenced Tuesday after pleading guilty in June to perjury, attempting to influence a public servant, forgery and committing a cybercrime. Additional charges were dismissed as part of her plea agreement.
Woods spent nearly three decades working in the state's forensic laboratory before resigning in 2023.
Authorities say problems with her work were discovered in cases involving homicides, sexual offenses, robberies and other serious crimes.
Investigators alleged that Woods altered or deleted DNA testing data, failed to properly troubleshoot problems during testing and failed to fully document work performed on cases. According to an arrest affidavit, Woods told investigators she had changed data in an effort to complete cases more quickly.
The investigation began in September 2023 after an intern at the Colorado Bureau of Investigation reportedly noticed missing information in a 2018 case handled by Woods.
The consequences have extended far beyond Woods herself.
In one case, Michael Clark was released from prison in 2025 after his murder conviction was vacated. His attorneys argued that DNA evidence in his case had been mishandled by Woods. Prosecutors have said they intend to retry him.
Her misconduct also reportedly affected two other homicide prosecutions. Prosecutors agreed to reduced sentences through plea agreements because they feared Woods' involvement with the evidence could undermine their cases and potentially result in acquittals at trial.
The scandal has forced authorities to undertake an enormous review of criminal cases connected to Woods' work to determine whether evidence or convictions were compromised.
At her sentencing hearing, Woods apologized for what she had done but acknowledged that an apology could not undo the damage her actions caused.
The case highlights the extraordinary consequences that can result when the integrity of forensic evidence is compromised: victims' cases can be thrown into doubt, convictions can unravel, and defendants may have to be retried years later.
Woods will now spend the next decade in prison for misconduct committed while working inside the very system responsible for ensuring forensic evidence is accurate and reliable.
Sources: Colorado Attorney General’s Office, The Associated Press, The Denver Post, and FOX Local
Photo Credit: Hyoung Chang/The Denver Post