US drones fired a salvo of missiles into a compound in Datta Khel area of North Waziristan today killing at least 12 people. The attack came just four days after US Special Forces commandos shot dead Al Qaeda chief Osama bin Laden in the garrison city of Abbottabad. A senior security official said that a compound and a vehicle were targeted by US drones in the Datta Khel area of North Waziristan, killing ten militants.