Using children for human bombs is a crime against humanity. Militant Islam, however, is completely devoid of any sense of humanity. What did they promise a 10 year old kid that would get her to commit murder and suicide? What disgusting people they are.
The bomb exploded in a market in the city of Maiduguri, in Borno state.
"The explosive devices were wrapped around her body," a police source told Reuters.
No group has said it carried out the attack. The market is reported to have been targeted twice in a week by female bombers late last year.
Correspondents say that all the signs point to the militant Islamist Boko Haram group.
They have been fighting to establish an Islamic caliphate in the north-eastern states of Borno, Yobe and Adamawa, which have borne the worst violence in their five year insurgency.
|Nigerian soldiers stand guard at the offices of the state-run |
Nigerian Television Authority in Maiduguri (June 2013)
The BBC's Krassimira Hendry says that this will not be the first suicide bombing involving young girls, part of a new militant strategy intended to capitalise on the fact that people in the Muslim-dominated north are less suspicious of women.
In other violence reported on Saturday a vehicle in Yobe state exploded at a checkpoint near a police station, killing at least two people.
The blast follows heavy fighting in the Yobe state capital Damaturu on Friday night, with buildings destroyed and civilian casualties reported.
|The ruins of burnt out houses stand in Baga town in Nigeria (April 2013)|
Scores of bodies from that attack - described by Amnesty International as possibly the "deadliest massacre" in the history of Boko Haram - are reported to remain strewn in the bush.
District head Baba Abba Hassan said most victims in the Baga attack were children, women or elderly people who were not able to escape when insurgents forced their way into the town by firing rocket-propelled grenades and assault rifles.
Boko Haram has taken control of many towns and villages in north-eastern Nigeria over the past year.
The conflict has displaced at least 1.5 million people, while more than 2,000 were killed last year.
Some 10,000 people have fled to Chad over the last week to escape the violence, raising fears of a humanitarian crisis, officials say.
Others are fleeing to Maiduguri, the capital of Borno, in buses provided by the government.