A bomb attack on a military base used by the US-led North Atlantic Treaty Organization (NATO) in Afghanistan has wounded at least 50 American soldiers, the US army says. A bomber driving a truck attacked Combat Outpost Sayed Abad in Afghanistan's eastern province of Wardak late on Saturday, a foreign news agency reported. On Sunday, US Army spokesman Major David Eastburn said that 50 American soldiers were among a total of 89 people injured in the attack. "It happened at 5:15 pm on Saturday. It detonated near the entry point at a combat outpost, resulting in 89 wounded in action and a 20-foot [six-meter] hole in the wall," Eastburn said. The Taliban have claimed responsibility for the attack, saying scores of US soldiers were killed in the attack.