They say they found it in Damasak, a town in north-eastern Nigeria they entered on Saturday, ending months of control by the militant Islamists.

"They are getting weaker and weaker by the day," he told the BBC on Friday.
President Goodluck Jonathan: "I'm very hopeful that it will not take us more than a month to recover the old territories"
Damasak is a trading town in Borno state near Niger's border and is about 200km (125 miles) from state's main city of Maiduguri.
It was overrun by the militants, who began their insurgency in 2009 to create an Islamic state, at the end of last year.
















