According to autopsy findings requested by The San Diego Union-Tribune and released this week by the Medical Examiner’s Office, the pump was likely beeping nonstop for nearly 24 hours, alerting Bach, who had Type 1 diabetes, that it had run out of insulin.

The Medical Examiner's Office ruled 63-year-old Keith Galen Bach's death as a homicide by negligence, and now the San Diego District Attorney is investigating it.

According to autopsy findings, the diabetic inmate's insulin pump was likely beeping nonstop for nearly 24 hours, alerting that it had run out of medication.