Kabul , Afghanistan ( CNN ) -- Just days after the governor of an northeastern Afghanistan province claimed dozens of civilians were killed in a NATO-led mission targeting insurgents , new allegations of civilian casualties surfaced in a nearby province Thursday . NATO 's International Security Assistance Force is investigating the claims stemming from an operation Thursday morning in the Alah Say district of Kapisa province , the military said in a statement . Armed insurgents were the target , ISAF said . `` We take civilian casualty allegations very seriously ; we 'll investigate this incident as quickly as possible , '' said U.S. Army Col. Patrick Hynes , director of ISAF Joint Command Combined Joint Operations Center . The incident followed a statement Sunday from the governor of Kunar province , who said that 64 people -- including 22 women and 26 young boys -- were killed in a joint operation by ISAF and Afghan security forces over a few days last week . ISAF said video evidence from the scene indicated 36 armed insurgents were killed . That incident is also under investigation .
NATO force is investigating reports of civilian casualties . Armed insurgents were targeted in Kapisa province . Allegations of such casualties also surfaced in another province Sunday .