James Limerick
James Limerick was held at USP Alcatraz, a federal prison. According to a Federal Bureau of Prisons historical account, he took part in an escape attempt on May 22, 1938, during which an officer, Royal C. Cline, was attacked. The account says a tower officer shot Limerick in the head and that he died later that day. It states that Cline died the following day.
Cause of death, as reported: Killed by staff. A Bureau of Prisons history page says a tower officer shot him during an escape attempt at Alcatraz.
Reported by: Federal Bureau of Prisons historical article (the agency that held him). The only account of how this person died comes from the agency that held him.