There has been widespread condemnation in the international community of a series of Christmas Day bomb attacks in Nigeria that killed almost 40 people.
The White House said the attacks were "senseless violence" and the UK foreign secretary called them "cowardly".
Militant Islamist group Boko Haram said it carried out the attacks.
A blast outside a church near the capital Abuja claimed 35 lives, while a policeman died in the city of Jos and four people were killed in Damaturu.
Nigerian President Goodluck Jonathan said the attacks were "an unwarranted affront on our collective safety and freedom", adding: "Nigerians must stand as one to condemn them."
