At least 21 worshippers were killed and about 80 others wounded when a suicide bomber on Saturday blew himself up outside a church soon after the New Year's mass in the Egyptian city of Alexandria, sparking religious clashes between Christians and Muslims.
Egypt's defiant Muslim Brotherhood on Thursday vowed to bring down the military-backed government as it called for a massive anti-regime rally, a day after over 525 people were killed in the deadliest crackdown by security forces on supporters of ousted President Mohammed Morsi.