The Taliban claimed responsibility on their Internet site for Saturday's attack, news of which came as the world marked the 10th anniversary of the 9/11 attacks that killed almost 3,000 people in the United States.
US Army spokesman Major David Eastburn said: "It happened at 5:15 pm yesterday.
"It detonated near the entry point at a combat outpost, resulting in 89 wounded in action and a 20-foot hole in the wall."
NATO's International Security Assistance Force said in a statement: "A Taliban suicide bomber detonated a large vehicle-borne improvised explosive device at the entrance of Combat Outpost Sayed Abad, Wardak province, yesterday."Eastburn said 50 American soldiers were among the injured.
(Published 11 September 2011, 07:33 IST)
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