An Islamic militant ambush near Kabul on a US aid organisation’s vehicle killed three women, an American, a Canadian-British national and a Trinidadian, officials said.
The three worked for the New York-based International Rescue Committee and were attacked in Logar.
Their Afghan driver was also killed. A spokeswoman for the International Rescue Committee, said they were contacting family members and would issue a statement soon.
Earlier an Afghan police official had said the women were American, Canadian and Irish.
The attack was carried out by five gunmen who stepped out of a small village area and fired at the IRC vehicles on the main road.
The International Rescue Committee provides emergency relief, rehabilitation, protection of human rights and post-conflict development in countries around the world, according to its website.
Two Afghan IRC staff members were shot and killed in Logar in July 2007 while driving to work on the National Solidarity Programme, a government-led scheme that carries out development projects.
At least 19 staff from aid organisations working in Afghanistan have been killed in militant attacks so far this year, compared with 15 killed for the whole of 2007.
AP