4 Afghan civilians killed in Kabul suicide bombing targeting NATO convoy in the capital

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An Afghan official says that four civilians have been killed in a suicide bombing targeting a NATO convoy moving through the capital, Kabul. The Taliban claimed responsibility for the attack.

Hashmat Stanikzai, a spokesman for Kabul's police chief, said the suicide car bomber targeted the convoy Sunday on a main road in western Kabul. He says the blast killed four civilians and wounded 20.

NATO had no immediate comment on the attack.

Taliban spokesman Zabihalluh Mujahid claimed the bombing. The Taliban has promised to step up attacks against Afghan security forces in a bid to undermine the Western-backed government as foreign combat troops prepare to withdraw by the end of the year.