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Francis Salemme, the head of a New England crime family known as “Cadillac Frank,” died in federal prison last week, according to the Federal Bureau of Prisons. He was 89. At the time of his death, he was in Missouri, serving a life sentence for the 1993 slaying of a Boston nightclub owner.

The bureau’s online records indicate that Salemme died last Tuesday, but the cause or circumstances surrounding his death were not immediately available....

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