William J. Robertson, a 78-year-old man from Kansas City, Kansas, died in the Wyandotte County Detention Center while awaiting trial on charges related to child sexual abuse. He was found unresponsive during routine security checks on a Sunday afternoon. Jail staff attempted life-saving measures, but he was pronounced dead by emergency medical services. Robertson was charged with one count each of electronic solicitation of a child believed to be under 14, internet trading in child sexual abuse materials, and sexual exploitation of a child. He had pleaded not guilty and was scheduled for a jury trial on July 27. Following his death, the Wyandotte County District Attorney's Office requested the case be dismissed, which was approved by District Judge Michael A. Russell. The Kansas Bureau of Investigation is conducting an investigation into the circumstances of Robertson's death, which is ongoing, with no evidence of foul play reported thus far. His death marks the ninth in custody at the jail over the past five years, with various causes reported.