KABUL , Afghanistan ( CNN ) -- The Taliban said its gunmen opened fire on an aid group 's vehicle in eastern Afghanistan on Wednesday , killing four International Rescue Committee workers and prompting the organization to suspend its operations . Three IRC female staffers -- a British-Canadian , a Canadian , and a Trinidadian-American -- were killed , as well as an Afghan driver who also worked for the New York-based aid group , the IRC said in a statement . Another Afghan driver was critically wounded in the attack in Logar province , south of Kabul , IRC said . `` They were traveling to Kabul in a clearly marked International Rescue Committee vehicle when they came under fire , '' according to the statement . The Taliban claimed responsibility for the attack . The aid workers were in a two-car convoy when gunmen opened fire on them in Pul-i-Alam , the capital of Logar , according to provincial governor Abdullah Wardak . IRC , which provides relief to refugees and victims of armed conflict around the world , said it `` has suspended its humanitarian aid programs in Afghanistan indefinitely . '' `` We are stunned and profoundly saddened by this tragic loss , '' said IRC president George Rupp . `` These extraordinary individuals were deeply committed to aiding the people of Afghanistan , especially the children who have seen so much strife . Words are inadequate to express our sympathy for the families and loved ones of the victims and our devoted team of humanitarian aid workers in Afghanistan . '' Earlier this month , aid groups in Afghanistan issued a report that said 19 of their workers have been killed in the country this year . The deaths Wednesday add to the count . The groups , in a report issued by the Agency Coordinating Body for Afghan Relief , said the attacks have forced them to scale back on relief work . `` This year there have been over 84 such incidents , including 21 in June , more than in any other month in the last six years , '' the report said . `` So far this year 19 NGO ( non-governmental organization ) staff have been killed , which already exceeds the total number of NGO workers killed last year . ''
Gunmen shoot and kill four international aid workers and driver near Kabul . Shooting occured during ambush on their convoy south of capital . Score: 6