A US general was wounded in an attack last week in Afghanistan's Kandahar province that killed two senior Afghan provincial officials.
The attack targeted a group that included the senior US commander in the country, four people with knowledge of the assault said.
Army Brigadier-General Jeffrey Smiley is recovering after suffering at least one gunshot wound inside the Kandahar governor's compound, three of the people said.
They spoke on the condition of anonymity because of the sensitivity of the issue. US military officials in Afghanistan and at the Pentagon have declined to comment on the attack or identify the wounded, describing them only as an American service member, an American civilian and a contractor who is part of the military coalition.
"We're not going to talk about the wounded," said Army Colonel David Butler, the top military spokesman in Afghanistan.