ISIS claimed a suicide bomb attack carried out on Thursday on an office of the Afghan Voice news agency and a neighboring Shi'ite cultural centre in Kabul, the group's Amaq news agency said in an online statement.
The suicide attack was carried out by one bomber wearing a vest and followed three other bomb blasts in the same area, the statement said.
The agency offered no evidence for the claim of responsibility for the attack, which killed dozens of people.
It was earlier reported that attackers stormed a Shiite Muslim cultural center in the Afghan capital, setting off multiple bombs and killing at least 35 people and wounding at least 56, authorities said.
Interior Ministry spokesman Najib Danish said an unknown number of suicide attackers set off an explosion outside the center before carrying out an attack inside. They set off explosive devices in the basement of the building where scores of people had gathered to mark the December 1979 invasion of Afghanistan by the former Soviet Union, he said.
Shiite leader Abdul Hussain Ramazandada said witnesses reported at least one suicide bomber sneaked into the event and was sitting among the participants. He exploded his device and as people fled more explosions occurred.