A Florida man seeking to become a certified nursing assistant was charged with murder last week.

As part of a background check, 51-year-old Todd Barket’s fingerprints were found to match those of a suspected killer in 20-year cold case. Barkett is a suspect in the murder of Sondra Better, the South Florida Sun Sentinel reported.

Better was killed at her consignment shop in 1998, days before she was set to renew her wedding vows, the paper reported.

“Our detectives worked years trying to find the killer in this case,” Acting Delray Beach Police Chief Javaro Sims told the newspaper. “We had fingerprints, we had blood, we even had a possible description from a witness. But the person responsible for this heinous case seemed to just disappear.”

Barket had avoided trouble and may have even worked in a nursing home, police said. But he submitted his fingerprints to the Agency for Healthcare Administration to become a CNA two months ago. His prints matched a national database linking him to the Better murder.

Barket was arrested on March 27 and faces a first-degree murder charge.