A man in the vicinity of the attack said he heard a "big boom".
Authorities say an attack on a Shiite Muslim cultural center in the Afghan capital Kabul has left at least 41 people dead and 84 wounded.
They took place during a ceremony to mark the 38th anniversary of the Soviet invasion in the country. In the past, Islamic State loyalists have singled out Shiites for attack, and the group claimed to be behind an attack last month on another news organization in Kabul, Shamshad TV.
"This gruesome attack underscores the dangers faced by Afghan civilians", Reuters reported rights group Amnesty International saying in a statement from its South Asia Director, Biraj Patnaik.
Afghan security forces near the scene in Kabul on Thursday.
ISIS claimed the terrorist act in an online statement through the group's Amaq news agency.
According to one survivor, social activists had gathered at the Tebyan social and cultural activity center for a meeting when a suicide bomber detonated his explosives.
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The Islamic State group affiliate in Afghanistan has claimed responsibility.
The attack took place opposite the offices of the Afghan Voice news agency.
Interior Ministry spokesman Najib Danish said another three people were wounded in Monday's attack, adding the exact target was unclear.
He called them attacks as against Islam and "all human values".
August 25: 20 people killed in an attack on a Shiite mosque, for which ISIS claims responsibility.
2016 was described as one of the deadliest for journalists in Afghanistan, with the war by the Taliban being the main source of violence. An initial blast at the entrance to the compound housing the two offices was followed by two more explosions inside the offices.
Separately, Dawlat Abad District Gov. Mohammad Karim said a powerful mine killed six shepherd children ranging in age from 8 to 10 on Wednesday.