European leaders have condemned the multiple Christmas day bomb attacks in Nigeria that killed at least 40 people.
Germany’s Foreign Minister Guido Westerwelle said those behind the blasts were “cowards” while the Vatican described the largest attack on a church near the capital Abuja an “act of blind hatred”.
Militant Islamist group Boko Haram claimed responsibility for the deadly blasts.
Bombs also detonated in Damaturu, Gadaka and Jos where four men were arrested in connection with the attacks.
Tensions along Nigeria’s middle belt between Christians in the south and the traditional Muslim north have flared up regularly in the last decade.
Boko Haram, which is loosely modelled on the Taliban in Afghanistan, aim to impose Sharia law across the country.
Nigeria’s Christian President Goodluck Jonathan has vowed to quash the terrorist network.