Multiple bomb blasts killed 12 people in a Christian area of Kano City, Nigeria over the weekend.
The radical Islamic group Boko Haram is believed to have carried out the attacks.
Kano City is located in northern Nigeria, where Christians are a minority.
In recent years, Boko Haram has targeted Christian churches in the north, killing hundreds.
The group is also waging war with the government and seeks to establish Sharia law in the north.