The reported toll of the bombing outside Kabul’s airport rose sharply on Friday, with local health officials saying that as many as 170 people were killed and at least 200 were wounded.Health officials’ estimate of the number of bombing victims, which did not include the 13 U.S. service members killed and 15 wounded, was supported by interviews with hospital officials. The hospital officials, who requested anonymity because the Taliban had told them not to speak with the media, said some of the dead civilians were Afghan Americans, with U.S. citizenship, NYT reported.

The revised estimates made Thursday’s attack one of the deadliest in the nearly two decades since the U.S.-led invasion.On Friday, the waiting crowds numbered in the hundreds, not the thousands of previous days. An estimated hundreds of thousands remain in the country who are desperate for escape from the Taliban rule of Afghanistan, but very few appeared to be getting to the airport gates on Friday.

The airport itself appeared to be largely, if not entirely, locked down. At the airport’s southern and eastern gates, Taliban guards told a reporter that no one was allowed to go near the airport and that all entrance gates were closed. About 5,400 people remained inside waiting evacuation, the Pentagon said on Friday.The grisly scenes on Thursday, when children were among those killed in the crowds, illustrated the intense danger for those braving the high-risk journey to the airport.