Eyewitnesses say at least four people have died following an explosion near a mosque in the city of Maiduguri, in north-eastern Nigeria.
The military have denied this. It says there have been three explosions in market areas, causing no casualties, but in a separate incident gunmen had shot members of a Muslim cleric’s family.
This follows a number of church bombings on Christmas Day – carried out by Islamist group Boko Haram, who are calling for strict shariah law in the country – which killed at least 49 people including a suicide bomber.
Forty-four of those deaths were the result of a huge attack on a church on the outskirts of the capital, Abuja. Many local people are now packing their things to flee from the violence.
This is the second year in a row that the group has staged such attacks. Last year on Christmas Eve, bombings killed 32 people in Nigeria.