Kabul: Four people were killed and seven injured on Sunday in a powerful suicide bombing in southern Afghanistan`s Zabul province, an official said.
The suicide bomber targeted a convoy of a private security company in Shah Joi district.
Mohamad Jan Rasulyar, Governor of Zabul province, told Xinhua over phone that a suicide attacker detonated explosives tied to his body at a market, killing one private security guard in the convoy, two passers-by and himself.
Seven other passers-by, all civilians, were injured in the attack.
No one has so far claimed responsibilities for the attack.