At least 20 people were killed and 30 injured after a suicide bomber blew himself up in a crowded market in the Afghanistan capital of Kabul on Thursday, The New York Times reported.
All of the dead were police.
"The bomber came from among the protesters and targeted our police forces", Rahimi said, adding the attacker was wearing civilian clothes.
Afghanistan's Interior Ministry spokesman says a suicide bomber has killed six policemen after exploding his devise amid a group of security officials monitoring protests by shopkeepers in eastern Kabul. An AFP reporter several kilometres from the scene heard the explosion.
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The local Tolo News stated that it was a suicide attack.
On Thursday last week, a suicide bombing at an underground cultural center in Kabul killed 41 people, including women and children.
IS claimed responsibility for the December 28 attack, which Afghan President Ashraf Ghani called a "crime against humanity" committed by terrorists.
Kabul police spokesman Basir Mujahid said police were conducting operations against illegal drug and alcohol sales in the area and that security personnel were attempting to maintain safety among crowds that had gathered.