American officials say the US has carried out a targeted drone strike against an ISIS-K member in Afghanistan, in retaliation for a bombing outside Kabul Airport.
More than 170 people were killed on Thursday - including scores of Afghans, 13 American troops and two British nationals.
President Biden had warned those responsible would 'pay'.
Overnight, the US said it had targeted an ISIS-K 'planner' in a strike.
A spokesperson said: "The unmanned airstrike occurred in the Nangahar Province of Afghanistan.
"Initial indications are that we killed the target. We know of no civilian casualties."
Earlier, White House press secretary Jen Psaki says the US is working with the Taliban now to prevent further attacks as the US evacuation winds down over the next few days.
She said: "In order to get American citizens out, our Afghan partners out, green card holders out... we need to coordinate with the Taliban.
"This is not a preferred relationship or a situation that we would have designed if we had started from scratch. I think that’s very clear. But right now, we need to continue to coordinate."