Kabul, Afghanistan (CNN) -- Apologies are not sufficient when it comes to civilian casualties, Afghan President Hamid Karzai told the NATO commander Sunday, days after a NATO airstrike killed nine Afghan boys. Karzai told Gen. David Petraeus, the commander of U.S. and NATO forces in Afghanistan, that incidents of civilian casualties during coalition military operations are the main reason for tensions in the U.S.-Afghan relationship and he demanded there be no more, according to a statement from Karzai's office. The comments came in a private conversation between the two men Sunday, according to an official with NATO's International Security Assistance Force who asked not to be named.
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Karzai and Petraeus have a private talk Sunday on civilian deaths
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Petraeus repeats his apology for the death of 9 Afghan boys
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Obama has already called it a "tragic accident"
@placeholder previously noted the Tuesday incident occurred less than 10 days after another one "that left many civilians dead in the same province."