Thousands feared dead in Nigeria
Officials say thousands may have been killed by Boko Haram in a series of attacks against villages.
They say militants sprayed bullets as they stormed the villages.
The officials say that when the gunmen arrived, they unloaded motorcycles and pursued residents who fled into the bush.
Local officials say the reported death toll ranges from hundreds to as many as 2,000 people.
Thousands escaped the massacre by fleeing on foot and some by bus, but some allegedly drowned by trying to get away when swimming in Lake Chad.
Yesterday a bomb worn by a 10-year-old girl exploded in a busy market place in the northeastern city of Maiduguri, killing 16 people and injuring more than 20, security sources said.
"The explosive devices were wrapped around her body and the girl looked no more than 10 years old," a police source said.
Maiduguri, the capital of Borno state, lies in the heartland of an insurgency by the Sunni Muslim militant group, and is often hit by bomb attacks.
The northeast states of Borno, Yobe and Adamawa are bearing the brunt of a five-year-old insurgency by Boko Haram, which wants to revive a medieval caliphate in Nigeria, Africa's most populous country and its biggest energy producer.
Last year more than 10,000 people died in the bloodshed.
The Boko Haram revolt is seen as the gravest security threat facing Nigeria, a country of 170 million people, and a serious challenge for President Goodluck Jonathan, who is seeking re-election in a national election set for 14 February.
CHAD PM APPEALS FOR AID FOR NIGERIAN REFUGEES
The Prime Minister of Chad, Kalzeubet Pahimi, is appealing for international aid for thousands of Nigerian refugees who have fled attacks by the militants across the border into the Lake Chad region.
This follows the attacks on Baga in Borno State a border town, last week. In the last week, around 2,000 Nigerians and 500 Chadians have fled Boko Haram attacks in Chad's Lake region, Chadian Prime Minister Kalzeubet Pahimi said on Wednesday.
Pahimi said that about 2,000 Nigerians and 500 Chadians crossed the border into Chad in recent days, joining around 1,000 Nigerians who arrived some months ago.
The UN Refugee Agency (UNHCR) added that the Chadian Red Cross and other groups conducted an evaluation mission during the week to the area where the refugees are located and distributed supplies including soap, tarpaulins, biscuits and jerry cans.
The UNHCR puts the total figure of Nigerian refugees in Chad at more than 5,000.
Additional reporting by Reuters.