Pubdate: 30 Mar 1999 Source: United Press International Copyright: 1999 United Press International MOTORCYCLE GANG LEADER SENTENCED SPRINGFIELD, Mass., March 30 (UPI) - The national leader of the Diablos motorcycle gang has been sentenced to 15 years in prison for drug trafficking. John ``Cadillac Jack'' Baltas, 57, of Meriden, Conn., was found guility by a federal court jury last November in Springfield of conspiring to ship two kilos of heroin from Auburn to Northampton. Three other members of the gang involved in the shipment have already pleaded guilty. Baltas' conviction capped a four-year FBI undercover investigation of the Diablos' criminal activities, which ranged from drug dealing and weapons violations to auto theft. - --- MAP posted-by: Mike Gogulski