At least seven people were killed on Wednesday when two Taliban suicide bombers army buses in Kabul.

At least seven people were killed on Wednesday when two Taliban suicide bombers army buses in Kabul.

"There have been two suicide attacks targeting buses carrying Afghan national army personnel," Farid Afzali, chief of the city's police investigation department, told AFP.

"Six military personnel and one civilian were killed in one attack, and 15 were injured. Four military personnel were injured in the other attack."

Ministry of Defense spokesman General Zahir Azimi confirmed the death toll and injured.

There were conflicting reports on whether the attackers were on foot or driving cars laden with explosives.

The Taliban claimed responsibility for both blasts and said at least 20 soldiers were killed, but the insurgents regularly exaggerate death tolls after attacks.

"This is a clear message to the stooge government that signed the slave pact, and we will step up our attacks after this," Taliban spokesman Zabihullah Mujahid told AFP.

Afghanistan and the United States on Tuesday signed the long-delayed bilateral security agreement (BSA) to allow about 10,000 US troops to stay in the country next year.