The siege came eight days after another suicide car bomb hit a U.S. military convoy, killing two U.S. soldiers, four American contractors and nine Afghan bystanders.
Protecting major population centers like Kabul is one of the most visible tests for Afghan security forces' ability to keep security now that international combat forces are pulling back ahead of the 2014 withdrawal.
Most of the U.S.-led military coalition will leave by the end of next year, more than a dozen years after launching the war to topple the Taliban regime over its sheltering of al-Qaida's leadership.
In the eastern province of Ghazni, another explosion at a local mosque killed four civilians and eight militants during Friday night prayers, local official Qasim Desewal said Saturday
He said that the Taliban had apparently stopped at the mosque in Andar district while traveling and the explosives they were carrying went off while they were inside.