One of the explosions was carried out by a suicide bomber outside a gate at the Hamid Karzai International Airport.

Source: Joseph Weber

A terror attack Thursday outside the Kabul airport in Afghanistan that included two explosions and gunfire killed at least 10 U.S. service members, according to news reports.

The American service members killed included four Marines, according to Fox News. 

One of the explosions was carried out by a suicide bomber outside a gate at the Hamid Karzai International Airport, in Kabul. The second was a detonated car bomb about 200 yards away, outside a hotel that was a staging area for evacuations from the airport. 

A U.S. official said the attack was “definitely believed” to have been carried out by the Islamic State group, whose affiliate in Afghanistan grew out of disaffected members of the Taliban, now in control of Afghanistan, who hold an even more extreme view of Islam.

Pentagon spokesperson John Kirby early Thursday in a tweet confirmed the explosions, as the United States tries to evacuate the last of the roughly 1,500 Americans still in Afghanistan before a deadline Tuesday. 

The evacuations follow the Taliban’s recent and swift takeover the country, resulting in a chaotic effort to get Americans and Afghan allies out of the country.

U.S. and allied officials warned roughly 12 hours before the explosion that a lethal attack was imminent and to avoid the airport. 

Even as the area was hit, evacuation flights continued to take off from the airport, the wire service also report.