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12 killed, vehicles torn apart in Kabul suicide attack

Anja Niedringhaus / AP

An Afghan fireman stands next to the debris of a car at the scene where a suicide car bomber attacked a NATO convoy in Kabul, Afghanistan, on May 16.

Anja Niedringhaus / AP

A U. S soldier secures the area where a suicide car bomber attacked a NATO convoy in Kabul on May 16.

 By Atia Abawi and Fazal Ahad, NBC News

KABUL, 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 said at least six Afghan civilians had also died. Full story

Anja Niedringhaus / AP

A U.S. soldier arrives at the scene where a suicide car bomber attacked a NATO convoy in Kabul on May 16.

Anja Niedringhaus / AP

An Afghan man directs his children away from the scene of the attack.

S. Sabawoon / EPA

A U.S. soldier inspects the scene.

More stories from Kabul on PhotoBlog

At least six Americans and six Afghan citizens were killed after a convoy carrying two American soldiers and four contractors was targeted by a suicide bomber. NBC's Atia Abawi reports.