Afghanistan's ruling Taliban militia have apologized for attack of the UN office in southern city of Kandahar by anti-US demonstrators on Wednesday (November 10), a UN official said in Islamabad on November 11.

"The Kandahar-based UN staff are staying in the town after Taliban authorities tendered apology for yesterday's incident," the official said, requesting not to be identified.

Thousands of Afghans who were holding an anti-US rally in Kandahar, the home to Taliban's headquarters, perked the UN office with stones, breaking several windows. However, there was no injury to the staff members.

The demonstrators were protesting against the upcoming sanctions on Afghanistan, which will be imposed if the Taliban fail to hand over the indicted terrorist Osama bin Laden for trial by October 14, according to a UN Security Council resolution issued last month.

Bin Laden was charged by the United States of masterminding the bombings of US embassies in East Africa last year. However, the Taliban have ruled out the extradition of the Saudi dissident to the United States.