Basiliscus sent to chase him two of his generals, the brothers Trocundes and Illus, who were both of Isaurian origin.
They defeated the ex-Emperor in July 476, and blocked him on a hill called "Constantinople" by local populations.
[2] While Illus and Trocundes besieged Zeno, Basiliscus was losing the support of the aristocracy and the Church in the capital because of his religious position; he also lost Illus and Trocundes' support, as he allowed the population of the capital to massacre all Isaurian who had not left the city with Zeno.
Here, in 483 or 484, they revolted against Zeno and proclaimed Leontius emperor, a Syrian and an officer of high reputation.
The rebels were defeated by the army of Zeno, composed of Romans and Ostrogoths led by Theodoric the Amal and John the Scythian (then a consul), near Antioch.