Kilij Arslan I
Dalassenos then returned to Constantinople. In spring 1093, when Tzachas attacked the port of Abydos in the Sea of Marmara, Alexios again dispatched him against the emir by sea. At the same time, however, Alexios called upon the Sultan of the Seljuk Sultanate of Rum Kilij Arslan I (r. 1092–1107) to attack Tzachas from the rear. The Sultan complied, and in an audience had Tzachas murdered. Nothing further is known of Dalassenos after this.