The US State Department confirmed four Americans were killed in the attack at a Kabul, Afghanistan hotel.
Two other US nationals were injured during the 13-hour siege at the Intercontinental Hotel.
A total of 22 people, including 14 foreign guests were killed.
"We can confirm that there were four U.S. citizens killed and two injured. We offer our deepest condolences to the families and friends of those who were killed and wish for the speedy recovery of those wounded," State Department spokeswoman Heather Nauert said in a statement.
Officials did not name the dead, although PR executive and former TV reporter Glenn Selig was confirmed deceased by his own company.
Glenn Selig was a spokesman for Trump Presidential campaign adviser Rick Gates and was in Kabul on business.
"Glenn was in Kabul on a potential success story involving Afghanistan and its steps to battle extremism. The focus was highlighting the country’s new president and constructing a democracy forum event for Afghani women," Selig Multimedia said.
He was a former journalist with Fox 13 News in Tampa.
The Taliban claimed responsibility for the attack at the hotel which it also targeted back in 2011.
