(http://msnbcmedia.msn.com/j/MSNBC/Components/Photo/_new/130516-kabul-attack-7a.photoblog600.jpg)Anja Niedringhaus / APSix Americans were killed Thursday when a car bomber attacked their convoy in Kabul, Afghanistan.By Atia Abawi and Fazal Ahad, NBC NewsKABUL, Afghanistan -- Six Americans were killed when a suicide bomber targeted a convoy carrying foreign troops in Kabul on Thursday, according to a NATO source.
The victims included two soldiers and four civilian contractors, the source added.
Officials in Afghanistan said six Afghan civilians had been killed, also.
The insurgent group Hizb-i-Islami, allied with the Taliban, claimed responsibility for the attack. In September, it claimed responsibility for an attack near Kabul's airport (http://worldnews.nbcnews.com/_news/2012/09/18/13927553-foreign-workers-killed-in-suicide-attack-on-minibus-near-kabul-airport?lite) that police said killed 12 people.
Kabul police spokesman Hashmatullah Stanikzai said the attacker detonated a Toyota Corolla. He added that 35 people had been injured.
The powerful blast took place at around 8 a.m. local time (11.30 p.m. ET Wednesday).
"It was a powerful explosion and some of the dead civilians were badly burned and cannot be recognized," Kane Backlash, a spokesman for Afghanistan's Health Ministry, told Reuters.
Reuters contributed to this report.
This is a breaking news story. Please check back for updates.
This story was originally published on Thu May 16, 2013 6:49 AM EDT
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