Investigators gather at the scene of a deadly bomb blast in the Afghan capital.
A suicide bomber killed two Afghan guards here on Wednesday (November 21).
It happened near the headquarters of the NATO training mission, which is in the main diplomatic area of Kabul.
Several people were wounded.
A second man wearing an explosive vest also approached the compound, but was shot dead by the Afghan security forces.
The Taliban quickly claimed responsibility for the attack.
Violence is intensifying across Afghanistan, ahead of the planned withdrawal of foreign troops by the end of 2014.
It's sparked concerns over how the local security forces will be able to cope.
Two dead in Kabul suicide attack (0:48)
Nov. 21 - A suicide bomber kills two Afghan guards outside a compound in the main diplomatic area of the Afghan capital, Kabul. Sarah Charlton reports. ( Transcript )