"The attacker used a Toyota van to attack a police post in Khost city," local police chief Abdul Hakim Eshaqzai told AFP.
"Among the dead is one police officer and four adult civilians and among the injured there are two police officers, two women and 10 other male adults."
Eshaqzai added: "This is an act of terror and is done by the enemies of the people and government of Afghanistan."
This phrase is often used by Afghan officials to refer to the Taliban, who have been battling international forces in Afghanistan since being ousted from power in 2001.
The militant Islamists frequently target Afghan police in their campaign against President Hamid Karzai`s Western-backed government.
Khost province, where the blast took place, borders Pakistan which is widely believed to be a key source of fighters, funds and supplies for the Taliban.
There are around 140,000 international troops in Afghanistan fighting the Taliban and they are due to hand responsibility for security to the Afghan army and police in 2014.
(Uu.H-AK)
Editor: Priyambodo RH
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