ISLAMABAD: Pakistan said Thursday it was seeking clarification of "incomprehensible" remarks by Afghan President Hamid Karzai calling for tougher Western action against militant sanctuaries.

Asked by reporters about remarks made by Karzai and his national security adviser Rangeen Dadfar Spanta, foreign ministry spokesman Abdul Basit said their comments were "incomprehensible".

"We have asked our ambassador in Kabul to seek clarification as to why these remarks have been made," he said.

Karzai did not explicitly mention Pakistan by name, but said the war against terrorism was a war in "the sanctuaries, funding centres and training places of terrorism which are outside Afghanistan".

"Whether we are able to destroy these sanctuaries or not is another question. We will try what we can.... Our international allies have this ability, but the question is why they are not doing it?"