A Milan appeals court on Friday vacated acquittals for a former CIA station chief and two other Americans, and instead convicted them in the 2003 abduction of an Egyptian terror suspect from a Milan street as part of the CIA's extraordinary rendition program.

The decision means that all 26 Americans tried in absentia for the abduction now have been found guilty.

The ongoing trials, which have dragged on for years, brought the first convictions anywhere in the world against CIA agents involved in a practice alleged to have led to torture. The case has been the source of diplomatic tensions, although three successive Italian leaders, including the technical government of Premier Mario Monti, have invoked state secrets, which has had the impact of limiting evidence in the successive trials and led to the acquittals of five Italians, including two spy chiefs.

An appeals court sentenced former CIA Rome station chief Jeffrey Castelli to seven years, and handed sentences of six years each to Americans Betnie Medero and Ralph Russomando. A lower court, while convicting 23 other Americans in November 2009, had acquitted the three, citing diplomatic immunity.