In November 2011, Sherri Warren, Keith's sister, contacted pathologist Mohammad Al-Bayati (who had more than twenty-five years experience in the field) to request that he review her brother's autopsy report, along with other evidence, and provide an opinion on her brother's death. Al-Bayati's conclusion claimed that the county medical examiner on the original case missed the cause of death because the required standard medical-legal investigative procedures were not followed. Al-Bayati claims Warren did not commit suicide, but was, in fact, murdered.