A notorious New England mobster was indicted Thursday on 18 counts of racketeering, drug trafficking, witness tampering, and other charges, said a spokeswoman for the US ­attorney’s office.

Enrico Ponzo, 44, of Boston was one of 15 men named in a 40-count federal indictment in 1997 that was aimed at breaking up a brutal and bloody power struggle in the Patriarca family of La Cosa Nostra.