US President Joe Biden has warned that another attack on Kabul Airport is highly likely.
About 170 people died after a suicide bomber targeted the airport on Friday as crowds of Afghans were trying to get on evacuation flights.
The IS-K group has claimed the attack.
In retaliation, the US carried out a drone strike on eastern Afghanistan late on Friday, killing two "high-profile" members of IS-K - the Islamic State (IS) group in Khorasan Province.
The two are described as a planner and a facilitator. It is unclear whether they were directly involved in planning the Kabul airport attack.
[Source: BBC]