Nigeria's top military officer has said they have located the more than 200 schoolgirls kidnapped by Boko Haram militants.

Speaking in in the capital Abuja, Chief of Defence Staff Alex Badeh, said: "The good news for the girls is that we know where they are but we cannot tell you".

Meanwhile, suspected Boko Haram gunmen stormed a Christian village in northeastern Nigeria, killing 20 residents, a government spokesman said today.

The heavily armed gunmen stormed Waga village in Adamawa state yesterday and opened fire, Ahmed Soji said.

"The gunmen believed to be Boko Haram insurgents in trucks and on motorcycles attacked the village where they killed 20 people and burnt several houses," Mr Soji said.

"The whereabouts of several other people are still unknown but it is assumed they fled into the bush to escape the attack and are yet to return," he said.

A second attack by the gunmen on nearby Gublak village was repelled by soldiers in the area, Mr Soji said without saying if there were casualties in the shootout.

Adamawa state, which is one of three states under emergency law along with Borno and Yobe, has seen a string of deadly Boko Haram attacks.

In February, the group killed 34 people and burnt scores of homes in coordinated bombing and shooting attacks on Michika, Kirchiga and Shuwa towns near the border with Borno state.

At least 24 people were killed yesterday when Boko Haram gunmen raided Kumuta village in Borno State, where the Islamists have stepped up deadly attacks on villages in recent months.