"The federal authorities, along with local cooperation from the Buffalo Police, engaged in a meticulous and lengthy investigation determining, in effect, that Josue Ortiz had nothing to do with the murders of the Camacho brothers, " said John Nuchereno, Ortiz's defense lawyer.

WSJ: Officials question 2004 Buffalo murder conviction

He faces up to 15 years in prison if convicted, though nothing will be finalised until he has been allowed to appeal twice - normally a lengthy process in the Italian legal system.

BBC: Berlusconi 'hosted prostitution parties', trial hears