Suicide Bomber Kills Seven In Yobe.

A girl thought to be as young as seven killed herself and seven others in a suicide bombing in northeast Nigeria as President
Goodluck Jonathan conceded his government had initially underrated the Islamist extremist group Boko Haram.

The attack on a market in the city of Potiskum, the commercial capital of Yobe state, was the latest in a string of suicide strikes in which children have been used.

The initial death toll given by witnesses and hospital sources was six -- the bomber and five others -- but medical sources at the state-run hospital in Potiskum said later two of those injured had also died.

Previous attacks have been blamed on Boko Haram.

Nineteen people injured in the blast were taken to the hospital, a local vigilante leader, Buba Lawan, told AFP.

The bombing highlights the severe security challenges facing Nigeria in the run-up to presidential and parliamentary elections on March 28.

During a swing through neighbouring Chad, Cameroon and Niger, French Foreign Minister Laurent Fabius on Sunday urged Nigeria to entirely commit itself to battling Boko Haram.

"It is necessary that there be full commitment from Nigeria in the fight against Boko Haram," Fabius told reporters in Niger's capital, Niamey.

On Saturday in the Chadian capital N'Djamena, Fabius visited a coordination cell set up on a French military base to liaise between Cameroon, Chad, Niger and France.

Paris has promised to increase intelligence-sharing and other assistance to the armies of Nigeria and its three neighbours, which banded together to battle Boko Haram after the extremists expanded their campaign across the region's borders.