KABUL (Reuters) - A suicide bomber killed four civilians in an attack apparently aimed at a convoy of foreign forces on Sunday, security sources said.
The attack happened opposite a clinic on a road often used by foreign troops, one said, adding four more civilians were wounded.
There were no immediate word about casualties among the foreign forces, he said. The site of the attack was cordoned off.
A spokesman for the NATO-led International Security Assistance Force (ISAF) said they were aware of the incident but had no details immediately.
The blast took place just two days before dozens of foreign ministers -- including U.N. Secretary General Ban Ki-moon and U.S. Secretary of state Hillary Clinton -- were due in the capital for an international conference of Afghanistan's future.
Some 150,000 foreign troops are squared off against a Taliban insurgency at its strongest since the hardline Islamists were overthrown by a U.S.-led force in the aftermath of the September 11, 2001 attacks.
(Reporting by Sayed Salahuddin; Editing by David Fox)
