[Updated 12:46 p.m.] White House Deputy Press Secretary Bill Burton gave the follow statement on the car bomb attack in Afghanistan:
"We were reminded again this morning of the great sacrifice that our troops and their families are making and our thoughts and prayers are with the loved ones of those we lost. While our troops are fighting for a better future for the Afghan people, the Taliban offers only destruction and they have so little respect for humanity that they would murder afghan civilians waiting for a bus. The United States and Afghan government remain steadfast in our determination to build security, stability and opportunity for Afghanistan. We are confident that the legacy of our troopsâ€™ extraordinary sacrifice will be an America that is stronger and more secure."
[Updated at 8:17 a.m.] Five of the people killed in a suicide car bombing in Afghanistan's capital Tuesday were U.S. service members, a U.S. defense official confirmed.
[Posted at 7:11 a.m.] Women, children and six troops were among 18 people killed in a suicide car bomb that exploded near a registration center for Afghan Army recruits Tuesday morning, officials said.
The attack occurred near an ISAF military convoy on a busy road, causing civilian injuries, ISAF said.
"ISAF strongly condemns the attack on civilians and ISAF Forces.This sort of desperate brutality and aggression reminds us of the pessimism of an enemy who seek to kill the innocent and to stop the progress necessary for a better Afghanistan," said Brig. Gen. Josef Blotz, an ISAF spokesman.
Along with the international service members, at least 12 civilians were killed and 48 others were injured, local medical officials said.
The Taliban claimed responsibility for the attack, which could be the deadliest on ISAF soldiers in Kabul this year.
The blast occurred in an area usually fortified with security, near the parliament and other government buildings in Afghanistan's capital city.
Zabiullah Mujahid, a Taliban spokesman, said the attack occurred at 8:15 a.m. (11:45 p.m. Monday ET), and that the attacker was able to "destroy five foreign vehicles and damage one more."
A NATO spokesman confirmed that five U.S. military vehicles were destroyed along with 13 civilian vehicles.
One of the civilian vehicles was a bus filled with people.
Hours after the blast, a nearby field was littered with charred body parts, some thrown hundreds of meters from the blast site.
In a statement, the U.S. Embassy condemned the bombing.
- CNN's Atia Abawi contributed to this report.