Blasts hit Nigeria churches

Bomb blasts damaged five churches in four cities in Nigeria's northern Kaduna state yesterday, injuring dozens of worshippers and leading to an immediate curfew, officials said.
The number of casualties in the blasts in the neighbouring cities of Zaria and Kaduna and in the southern Christian-dominated Nassarawa and Barnawa was not immediately clear. Police and the military cordoned off the areas.
Kaduna state authorities immediately imposed a 24-hour curfew.
The state-run National Emergency Management Agency (NEMA) said the blasts happened in the Wusasa and Sabongari districts of Zaria, previously targeted by the Islamist group Boko Haram.
No group has claimed responsibility for the attacks.
the latest in Africa's most populous nation and largest oil producer, with many of the previous attacks also claimed by Boko Haram, whose insurgency has killed more than 1,000 people since mid-2009.