At least one person was killed and six others were injured in a suicide bombing that hit a diplomatic district in Kabul on Saturday. A spokesperson for the Interior Ministry said the attacker also died on the spot, and two of the injured are in critical condition. The blast happened in a fortified area where the US embassy and headquarters of NATO-led coalition forces are located. No group has claimed responsibility for the attack. The Afghan capital also was hit by a series of terror attacks late last year.