Four U.S. soldiers have been killed in Afghanistan by a roadside bomb in eastern Kunar province.

A U.S. military statement said the soldier's vehicle was hit by an improvised explosive device while on patrol Sunday.

Also Sunday, Sibghatullah Mujaddedi, who chairs the upper house of Afghanistan's parliament, escaped with minor injuries from a suicide bombing in Kabul. The bombing killed two bystanders and two suicide bombers.

Mujaddedi said he believed Pakistan's intelligence agency organized the bombing. Pakistan denied the charge.

Meanwhile, the Taleban claimed responsibility Sunday for kidnapping four Albanians and four Afghan men working for U.S. forces in southern Afghanistan.

Taleban spokesman, Qari Mohammed Yousaf said his group kidnapped the men Saturday. He also said the Taleban's fugitive leader Mullah Mohammad Omar would decide what would happen to the men. All eight worked for a cleaning company employed by coalition forces.

Some information for this report was provided by AFP, AP and Reuters.