Nigeria's Chief of Defence Staff said, ‘We know where the girls are but we cannot tell you military secrets. Just leave us alone. We are working. We will get the girls back.’ Nigeria has ruled out forceful rescue attempts. Pentagon officials have not confirmed claims that the girls have been located. On Monday Nigerian children across the state embarked on prayers for divine intervention to bring back Chibok’s schoolgirls. They also wrote letters to Boko Haram and President Goodluck Jonathan. More than 470 people have been killed since the girls were abducted. Meanwhile Cameroon has deployed 1,000 troops to its border with Nigeria to fight the growing threat of Boko Haram. The troops will carry out reconnaissance missions and return fire if necessary. Boko Haram killed 11 soldiers and 13 police officers in the north-eastern state of Yobe. Yobe is currently under a state of emergency. See: http://www.vanguardngr.com/2014/05//children-write-jonahtan-boko-haram-chibok-schoolgirls/#sthash.ekxTMSor.dpuf