The infamous gangster was convicted in 2013 of 11 murders.

The incident occurred just hours after he was shifted to the hospital from a Florida jail.
A spokesperson for the Federal Bureau of prisons  was quoted as saying by WPRI: "Life-saving measures were initiated immediately by responding staff."

"Mr. Bulger was subsequently pronounced dead by the Preston County Medical Examiner," said the spokesperson.

The life of the Bulger had inspired several movies.

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