The Latest on the arrest of former New England mob boss Francis "Cadillac Frank" Salemme (all times local):

3:55 p.m.

Former New England Mafia boss Francis "Cadillac Frank" Salemme (sah-LEHM'-ee) has made a brief court appearance in federal court in Boston.

The 82-year-old Salemme was charged Wednesday with the murder of a witness on May 10, 1993.

The name of the witness wasn't released, but another former high-ranking member of the New England mob was charged in June with lying to federal officials about the May 1993 killing of Boston nightclub manager Steven DiSarro. Robert DeLuca's indictment says he arranged with Salemme to have DiSarro's body buried in Rhode Island.

Salemme agreed to be held without bail, at least temporarily. Prosecutors say Salemme had been living in Atlanta and was arrested Wednesday in Connecticut while fleeing. Salemme's lawyer denied that his client was trying to flee.

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12:40 p.m.

Federal prosecutors say former New England Mafia boss Francis "Cadillac Frank" Salemme (sah-LEHM'-ee) has been arrested in the murder of a witness.

A document filed in court says Salemme is charged with the murder of a witness on May 10, 1993, but it does not name the witness.

However, another former high-ranking member of the New England mob was charged in June with lying to federal officials about the May 1993 killing of Boston nightclub manager Steven DiSarro. Robert DeLuca's indictment says he arranged with Salemme to have DiSarro's body buried in Rhode Island.

Salemme is expected to make an initial appearance Wednesday afternoon in Boston federal court.

Salemme's attorney said that he didn't have details on the specific allegations against his client but that they would fight the charges.