Attacks, reprisals kill 100 in Nigeria A CURFEW in Nigeria's north has failed to stop days of ongoing violence and almost 100 deaths. A rescue services official says more than 98 people have died since Sunday after a trio of church bombings sparked reprisals in Kaduna state. A radical sect known as Boko Haram has claimed responsibility for attacks on churches in the cities of Zaria and Kaduna, setting off violence that eclipsed the original attacks. The reprisals in the Nigerian flashpoint state highlight festering religious tensions in the West African nation of more than 160 million people. Kaduna sits at the border between the country's predominantly Muslim north and its mainly Christian south. A history of attacks and counterattacks between the two communities there means that authorities are often cautious about releasing death figures. Officials initially said 21 people were killed in Monday's blasts, but now say the death toll has jumped to 98, including reprisal killings. They refused to give a breakdown clarifying who died in the initial blasts and who was killed in reprisals. As news of the church attacks filtered through the city on Monday, young Christians took to the streets in violent protest. An AP reporter saw smoke billowing over a mosque in a predominantly Christian part of the city. People mounted illegal roadblocks and were seen harassing motorists, while a motorcycle taxi rider lay seriously hurt and bleeding by the road side. Police said about 1,000 Muslims took refuge at police quarters. As soon as the state government relaxed the curfew on Tuesday, Muslims fought back. The violence then spread to both Muslim and Christian neighbourhoods beyond Kaduna to remote parts of the state, and prompting the government to re-impose a round-the-clock curfew. Kaduna State Emergency Management Agency spokesman Abubakar Zakari Adamu said overnight that parts of the state continued to riot.