The Nigerian army says it has destroyed a number of well-equipped camps used by the militant Islamist group, Boko Haram, in the north-east of Nigeria.
Senior officer Chris Olukolade revealed the extensive nature of the camps, which he said were used to co-ordinate attacks on nearby local communities.
The BBC has not been able to independently verify the army’s claim.
Some 2,000 soldiers were deployed to the region last week, in the biggest campaign to date against Boko Haram.
On 14 May, Nigerian President Goodluck Jonathan gave security control to the military after declaring a state of emergency in the three north-eastern states where Boko Haram have been most active – Borno, Yobe and Adamawa.