In Colombia, Left-wing Farc rebels have attacked a police station in Las Mercedes in the north of the country. Six police officers and two soldiers were injured in the dawn shoot-out. The attack comes a day after a girl was killed and eight other children injured when a rebel grenade hit their school in the south-western town of Caloto. Defence Minister Juan Carlos Pinzon said a commission of experts would meet today to devise a new military strategy against the guerrilla group. Around 30 members of the security forces repelled the Farc offensive against Las Mercedes police station which came under mortar attack and rifle fire. Speaking in Marquetalia, where the Farc was founded 47 years ago, President Santos said those willing to give up the armed struggle would be helped to re-integrate into society. President Santos earlier this month appointed new military commanders and a new Defence Minister in an attempt to devise new strategies to combat the rebels and other armed groups.