HENRYETTA, Oklahoma - The death of the half sister of one of convicted killer Kevin Sweat's victims has been ruled suicide, according to the Oklahoma Medical Examiner's Office.

Charyl Schultz was found dead in her Henryetta home in late November, 2014. The Oklahoma State Bureau of Investigation sent out a bulletin at that time, stating that the 33-year-old woman's death was suspicious and would be investigated.

An autopsy shows that Schultz hanged herself to death. She had no drugs in her system and no medical abnormalities were found, the medical examiner's report states.

Schultz's half sister, Ashley Taylor, was Sweat's fiancee. He pleaded guilty to her murder and that of Weleetka girls Skyla Whitaker and Taylor Paschal-Placker.