An explosion went off Thursday outside Kabul's airport, where thousands of people have flocked as they try to flee the Taliban takeover of Afghanistan. Western nations had warned of a possible attack there in the waning days of a massive airlift. The Pentagon confirmed the blast, with no immediate word on casualties. Suspicion for any attack targeting the crowds would likely fall on the Islamic State group and not the Taliban, who have been deployed at the airport's gates trying to control the mass of people. AP has reported that an Afghan eye witness said that he saw several people who appeared to be killed or wounded in an explosion among crowds waiting outside one of the gates to Kabul airport. Adam Khan says some people appeared to be missing body parts. He says he was about 30 meters (yards) from Thursday's blast. The explosion occurred as Western nations are struggling to evacuate people following the Taliban takeover of Afghanistan. **More to follow