The NATO-led military alliance on Saturday handed over security responsibility of three districts in the southern province of Helmand to Afghan security forces, an Afghan official said. The alliance has been battling insurgents in the districts of Marja, Nad Ali and Nawa in Helmand. The hand-over ceremony was attended by senior government and military officials, the provincial governor's office said in a statement quoted by the German Press Agency "DPA". Afghan forces have started to take security responsibility of certain parts of the country ahead of the 2014 withdrawal of international troops.