 "The National Transportation Safety Board determined that the probable cause for the accident was an uncontrolled descent from cruise altitude for undetermined reasons from which a recovery was not, or could not be, effected", the official Aircraft Accident report concluded.The NTSB investigation could not help solve the mystery of why the Learjet plunged into the Atlantic Ocean, but it did end the longstanding fugitive from justice, Ruggiero.Until his body was identified in a morgue, Ruggiero had been listed as a fugitive from justice, a member of the Gambino crime family, a large scale heroin trafficker and a key customer of Vito Rizzuto's drug operation.