A former Colorado Bureau of Investigation DNA scientist appeared in court Thursday to face criminal charges over data tampering that authorities said raises questions about the validity of more than 500 cases.

Missy Woods retired from CBI in lieu of termination in late 2023 after the agency discovered widespread problems in her work.

A former CBI DNA analyst was criminally charged for over a year after the agency learned about mishandled or manipulated evidence. Yvonne "Missy" Woods faces over 100 separate charges related to over 1,