Blast in Kabul

A suicide bomber rammed his car into an Afghan army vehicle providing security for a compound where Afghanistan's political and tribal elites are due to gather next week to debate a security pact with the United States.

Saturday's attack took place just hours after President Hamid Karzai called on the Taliban to take part in the Loya Jirga assembly that convenes on Thursday to decide whether to allow some U.S. troops to stay in Afghanistan after 2014.

At least six people were killed and 22 wounded in the blast, said Sediq Sediqqi, an Interior Ministry spokesman. He said the casualties were a mix of soldiers and civilians.