violence between muslims and christians in egypt is taking on the flavor of inner-city gang warfare:

CAIRO, (Reuters) - Muslims and Christians set fire to each others' homes and shops near the southern Egyptian town of Nagaa Hamady on Saturday, three days after a gunman killed six Coptic Christians in a drive-by shooting, security sources said.

"Four houses and a shop belonging to Christians in the village of Tiraks were set on fire by Muslims, while four shops owned by Muslims in the village of al-Bahgorah were set on fire by Christians," a security source said. The villages are near Nagaa Hamady.

Six people, Christian and Muslim, were injured in the fires, they added.
Christians account for about 10 percent of Egypt's predominantly Muslim population of about 78 million. Sectarian violence is rare, but disputes over issues including land or women occasionally erupt.