ISIS claimed responsibility for a series of bomb attacks in the city of Jalalabad in eastern Afghanistan, the group's Amaaq News Agency said on its Telegram channel on Sunday.
"More than 35 Taliban militia members were killed or wounded, in a series of explosions that took place," the militant group said, referring to blasts on Saturday and Sunday.
There was no immediate comment from the Taliban about the death toll.
Sources had told Reuters on Saturday at least three people were killed and about 20 were wounded in blasts in Jalalabad. The sources had said they were citing information from hospitals and eyewitnesses.
ISIS also claimed responsibility for a bloody attack that killed more than 100 people at Kabul airport at the end of August.
Jalalabad is the capital of Nangarhar province, the heartland of the ISIS group's Afghanistan branch.