Terror organisation Boko Haram claimed not to be responsible, however is suspected to be.
[1] In the city of Potiskum, Yobe, in the north east of the country armed men shot at least 6 church-goers.
[2] Three days later, on 28 December, in the village of Musari another fifteen Christians were killed.
Attackers invaded the village and cut their throats while asleep.
The victims included a traffic police officer and fourteen civilians.