Nine family members including six children were killed after a US strike targeted ISIS-K bombers in Kabul on Sunday, according to CNN.
Earlier reports citing an Afghan police chief suggested the blast was due to a rocket attack.
A security official from the recently deposed government told AFP it was a rocket that “initial information shows hit a house.”
The US carried out a military strike on Sunday in Kabul, two US officials told Reuters.
The two strikes initially appeared to be separate incidents, though information on both remained scarce.
An ISIS-K attack outside Kabul airport on Thursday killed more than 170 people including 13 US military personnel as Afghans queued up attempting to flee Taliban rule.
The US retaliated with a drone strike that they say killed two top ISIS-K members.
US President Joe Biden warned on Saturday that another attack was highly likely.