A man who alleges his thumb was severed after San Diego Central Jail deputies closed a metal door on his hand is suing the county, San Diego Sheriff Kelly Martinez and the deputies involved.

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.

The agency took the unusual step based on what it called a severely lacking response by sheriff’s deputies to Keith Galen Bach’s medical emergency. His insulin pump had likely beeping