The United Nations Security Council, on Friday, issued a strong condemnation of the deadly August 26 terrorist bombing at the Hamid Karzai International Airport in Kabul, calling the attack “especially abhorrent.”

Current Council President T.S. Tirumurti issued the statement from the Council following the attack, which left more than 170 dead, including civilians seeking evacuation and U.S. military personnel assisting in the evacuations. The Council expressed its condolences to the families of the victims, and reaffirmed its conviction that terrorism “constitutes one of the most serious threats to international peace and security.”

The Council urged all member states to hold those responsible for terrorist acts accountable, including not just perpetrators but organizers, sponsors, and financiers of terrorist activities. “[A]cts of terrorism are criminal and unjustifiable, regardless of their motivation,” the Council reiterated, and called upon all states to follow international laws and treaties to combat terrorism by all means. The Council also supports the work of the United Nations Assistance Mission in Afghanistan (UNAMA) and called for the safety and security of U.N. personnel and member states’ diplomatic and consular personnel involved in the ongoing evacuations of civilians.

The attack took place as tens of thousands of Afghan civilians and others have crowded the airport seeking to escape the country before the August 31 end of the U.S. military mission in Afghanistan. Also on Friday, U.S. Central Command released a statement that they had carried out an unmanned airstrike against an ISIS-K planner in Nangarhar Province in Afghanistan, near the Pakistan border.