EDISON - Federal prosecutors say 127 people are facingcharges in one of the largest mafia crackdowns in FBI history.

The FBI said most of the arrests were made in New York and some in Rhode Island. New Jersey arrests took place in Kenilworth, Edison, Union, Basking Ridge, Flemington and West Orange.

U.S. Attorney General Eric Holder said at a news conference in New York City that the defendants include high-ranking members of the Gambino and Colombo crime families and the reputed former boss of organized crime in New England.

Holder says the charges cover decades' worth of offenses, including hits to eliminate perceived rivals, a killing during a botched robbery and a double shooting in a barroom dispute over a spilled drink.

Authorities say the investigation was aided by informants who recorded thousands of conversations by suspected mobsters.

AP wire services contributed to this report