A suicide car bomb attack killed five people including one American soldier on a heavily guarded road between a US military base and the German Embassy in the Afghan capital.
Separately, a US service member died Saturday when militants fired at a CH-47 transport helicopter and it made a "hard landing" in eastern Kunar province, the US military said.
In a third attack Saturday, a suicide bomber in a minivan charged a convoy of NATO troops and Afghan police in eastern Nangarhar province, killing one civilian and wounding three others, said Ghafor Khan, a spokesman for the provincial police chief. He said three police were also wounded.
The Taliban claimed responsibility for the bomb attack in Kabul and said German military officers were the targets. A spokesman for the German Foreign Ministry in Berlin said "some personnel" were wounded in the blast, but he did not give numbers. He said they had no reports of deaths.