In the battle that ensued after a sortie of the garrison the Bulgarian tsar was killed and his troops were forced to retreat .
Vladislav used this to launch another assault against Dyrrhachium , which was defended by the strategus Nicetas Pegonites .
In the battle that ensued after a sortie of the garrison the Bulgarian tsar was killed and Vladislav 's troops were forced to retreat .
Vladislav used this to launch another assault against Dyrrhachium , which was defended by the strategus Nicetas Pegonites .