Mosque blasts death toll above 102
Nigerian President Goodluck Jonathan has vowed to track down the perpetrators of the bomb blasts that killed more than 100 people at the central mosque in the city of Kano.
Jonathan said his government will "continue to take every step to put an end to the reprehensible acts of all groups and persons involved in acts of terrorism".
More than 102 people were killed in the bomb explosions at the central mosque in Kano, said a hospital worker.
The multiple explosions that hit the mosque on Friday injured more than 150.
"Most of those receiving treatment ... are in dire need of blood, and we are appealing to people to come and donate their blood to rescue the victims," Dr Usman Bashir told Associated Press on Saturday.
Hundreds had gathered Friday in the mosque, which is known for attracting moderates, for a sermon in a region terrorised by attacks from the extremist group Boko Haram.
Witnesses said heavy smoke could be seen billowing in the sky from a long distance away. Immediately after the blasts, hundreds of angry youths took to the streets in riots, throwing stones, brandishing sticks and shouting at security officials.