Complex sentence: According to Ağca's later testimony, he met with three accomplices in Rome, one a fellow Turk and two Bulgarians, with operation being commanded by Zilo Vassilev, the Bulgarian military attaché in Italy.
Split into simpler sentences: According to Ağca's later testimony, he met with three accomplices in Rome; one a fellow Turk and the other two Bulgarians. The operation was commanded by Zilo Vassilev, the Bulgarian military attaché in Italy.