Afghanistan's President Hamid Karzai has accused Pakistan of firing more than 450 rockets into Afghan territory over the past three weeks. He has blamed Pakistani forces for the attacks which have killed 36 people, including 12 children. President Karzai said he had raised the rocket attacks with Pakistani President Asif Ali Zardari at a regional anti-terrorism conference in Teheran on Saturday. He said the attacks should be stopped immediately and if they are not being carried out by Pakistan, then it should make it clear who is behind the attacks. The president said he had also discussed the attacks with the Afghan NATO commander Gen David Petraeus and US Ambassador Karl Eikenberry yesterday. Officials say the attacks have been concentrated in the eastern provinces of Kunar and Nangarhar from where NATO forces have withdrawn.