Based on my knowledge of this case, which draws on documentation from the 1978 period, the Italian finding is at odds with the facts. In particular, the contemporaneous accounts indicate that a trio that bore no serious resemblance to Musa al-Sadr and his two companions, arrived at the Holiday Inn in Rome and then disappeared. The prevailing presumption is that this was a trio masquerading as the Imam and his companions. The current Italian finding does not seem to take account of this masquerade at all.
The Daily Star - Politics - Italy closes Moussa Sadr case: "Italian judges have shut the book on the 1978 disappearance of Shiite cleric Imam Moussa Sadr, concluding Thursday that there is no proof of Libyan involvement in the matter.
The Italian news agency ANSA reported Thursday that the Italian magistrates agreed with a finding by Prosecutor Franco Ionta that the investigation was complete and had revealed 'no evidence' that Libya had a hand in the disappearance of Sadr, the founder of the Amal Movement, who disappeared during a trip to Libya 27 years ago.
Libya claims the imam left its territory in 1978, headed for Italy. But Italy had denied the claim for decades. However, earlier this year the Italian Prosecutor established that Sadr had arrived in Italy, but the cleric's current whereabouts and that of his aides remain a mystery."