The attack took place about 8 a.m., said Gen. Mohammad Daud Amin, deputy chief of Kabul police, a time when many people were commuting to work. A suicide bomber in a Toyota Corolla pulled up beside a
Nine civilians were killed and 35 wounded, according to the Afghan Health Ministry. Local authorities said several of the dead were women and children.
Footage of the scene showed the road scattered with debris from torn-apart vehicles in front of several damaged or destroyed houses. Firefighters and police officers were shown combing the wreckage and tending to the injured.
John Manley, a spokesman for the North Atlantic Treaty Organization-led coalition, said the six foreign deaths included two troops and four civilian contractors. He added that it wasn't immediately clear who was targeted in the blast, which remained under investigation.
In a statement, U.S.-military contractor DynCorp International confirmed that the four deceased civilian contractors were its employees and that three others were wounded in the attack. They were in Afghanistan working on a program to help train Afghan security forces.
"Our party will increase its attacks against foreign troops in Afghanistan in the future," he added.
Insurgent groups in Afghanistan have a history of taking questionable credit for attacks done by others and exaggerating claims.
Sediqqi added that the group was also targeting
Founded in 1977, Hezb-e-Islami Gulbuddin was initially engaged in fighting the country's Soviet occupiers. The group was forced out of Kabul by the
Karzai condemned Thursday's attack, calling it "an inhumane and un-Islamic act."
"Terrorists and enemies of Afghanistan's peace brutally targeted a residential area and left many innocent civilians including children dead and injured," he said in a statement.
Marine Gen. Joseph F. Dunford Jr., who commands international troops in Afghanistan, said, "The insurgents cannot offer the Afghan people a better future."
"All they can offer is violence and oppression," he said in a statement. "While today's attack shows the insurgents remain dangerous, they are not a threat to the Afghan government and its forces."
In April, the Taliban said it was stepping up attacks on international troops and diplomatic targets as part of its spring offensive, when insurgent strikes tend to increase as the weather improves.
The last explosion in Kabul took place in March, when Taliban suicide bombers killed nine civilians lining up outside the Afghan Ministry of Defense during the visit of U.S. Defense Secretary
This latest attack comes as Afghan forces take more responsibility for the nation's security as foreign combat troops prepare to leave Afghanistan by the end of 2014.