NEW : He noted the incident occurred less than 10 days after another incident `` that left many civilians dead in the same province . '' Karzai condemns the attack . Helicopters attacked after insurgents fired rockets at government troops . Several civilians were killed , including some children . Gen. David Petraeus apologizes .
NEW : Karzai condemns the attack . Helicopters attacked after insurgents fired rockets at government troops . Several civilians were killed , including some children . Gen. David Petraeus apologizes .