Egyptian Copts and Muslims clash again, in central Cairo

"(Reuters) - One person was killed and more than 80 were wounded in clashes at the Coptic Orthodox Cathedral in central Cairo on Sunday after a funeral service for four Egyptian Christians killed in sectarian violence with Muslims, state media said."

http://www.reuters.com/article/2013/04/07/us-egypt-clashes-idUSBRE93503A20130407