Some of the men had already been charged with racketeering conspiracy and murder.
On the most serious count, racketeering conspiracy, the three men face up to 20 years in prison.
He was charged with two racketeering conspiracy counts in the 1995 case.
The first count of the indictment charges the group with racketeering conspiracy.
He pleaded guilty in May 1996 to a single charge of racketeering conspiracy.
Six men face charges of racketeering conspiracy involving stock trading.
Six others, including 85-year-old Volpendesto, also were charged with racketeering conspiracy.
The sentence for racketeering conspiracy could have been for up to 20 years.
Pleaded guilty to racketeering conspiracy and was sentenced to 11 years in prison.
The others arrested, including businessmen and a building inspector, were charged with racketeering conspiracy.