A gunbattle raging in a crowded Gaza City neighborhood between Hamas forces and a heavily armed clan has left two clan members dead, Hamas security officials said Tuesday. Machine-gun fire and explosions were audible Tuesday morning around the neighborhood home to the Doghmush clan, a notorious family with links to both terrorist and criminal groups. Members of the clan were responsible for kidnapping a BBC journalist last year. Tuesday's fighting was the worst violence in Gaza since an early August clash between Hamas and another clan tied to its Fatah rivals. Two Doghmush fighters were killed, and at least one policeman was seriously wounded, the Hamas security officials said. The clan posted an announcement on a Gaza Web site saying several of its members were hurt.