NEW YORK (AP) - Jailed Mafia boss Joseph Massino secretly recorded his successor plotting the assassination of a federal prosecutor, becoming the first head of a New York Mafia family known to have turned government informant, sources familiar with the case said Thursday. A federal indictment unsealed Thursday alleges that acting Bonanno family head Vincent "Vinny Gorgeous" Basciano planned the killing of a top mob prosecutor in meetings with someone described as a "high-ranking member" of his crime family. The FBI recorded the conversations with the help of the high-ranking member, the indictment says. Several sources familiar with the investigation...