Police say an inmate's DNA has linked him to the December 2009 slaying of a 97-year-old Dallas woman.
Dallas police say the attacker ate chicken at Skelton's house. A bone yielded DNA.
Ypina's DNA was not in a national database at the time of the slaying. He was later convicted burglary and unlawful possession of a firearm by a felon and is serving 10 years.
After the story was published, a Texas Ranger investigating attacks on elderly women contacted police, who ran the Skelton case DNA evidence through the database again.
Electronic prison records had no listing of an attorney for Ypina.