Samuil of Bulgaria relied on the high waters of the river and did not take any serious precautions to secure the camp. Strangely the circumstances were the same as at the battle of Spercheios seven years earlier, and the scenario of the fight was similar. The Byzantines managed to find a ford, crossed the river and attacked the heedless Bulgarians at night. Unable to resist effectively the Bulgarians soon retreated, leaving the camp and Samuil's tent in the hands of the Byzantine Greeks.