Police say missile was fired from drone ##s flying low over Karachi , official says . Militants fired back at pilotless aircraft , according to officials in Pakistan 's tribal region . This is the 12th this year , compared to just three in same period last year . U.S. military in Afghanistan routinely does n't comment on reports of drone attacks .
Witnesses say missile was fired from drone plane flying low over village , official says . Militants fired back at pilotless drone , according to official in Pakistan 's tribal region . Strike is the 12th this year , compared to just three in same period last year . U.S. military in Afghanistan routinely does n't comment on reports of drone attacks .