In Afghanistan, two US civilians and two Afghan security forces were killed in an attack by a local army trainer on Tuesday as a major international conference in Kabul decided to hand over security responsibility to Afghan forces by 2014. The incident occurred when a local army trainer opened fire at a weapons training centre in a military base near Mazar-e-Sharif, capital of Balkh province. A statement by the NATO-led International Security Assistance Force (ISAF) said one foreign soldier and one Afghan soldier were injured in the incident. The statement added that one of two dead Afghans was believed to be the shooter. A joint investigation by Afghan and ISAF military officials is under way. The attack came a week after another rogue Afghan soldier killed three British troopers and injured four in the southern province of Helmand. NATO-led nations are putting stress on training of Afghan forces to take over security responsibility but such incidents undermine the initiative. Meanwhile, the Taliban killed eight policemen and wounded another in an attack on the district headquarters of Dana Ghori the in northern province of Baghlan. Provincial governor Munshi Abdul Majeed said that three insurgents were also killed and five injured in the gunbattle.