International aid workers killed in Afghanistan
Updated
The United Nations has appealed for the protection of aid workers in Afghanistan after the killing of three female western aid workers and their driver.
The Taliban has claimed responsibility for the ambush near the capital, Kabul.
Taliban spokesman, Zabihullah Mujahed, has said the group's fighters had ambushed a two-vehicle convoy of what he called "military personnel," most of them female, in Logar province.
The deputy police chief in Logar, Abdul Majid Latifi, says the attackers broke the windows of the clearly-marked IRC Landcruiser and shot the women and their driver at close range.
A second driver was wounded in the shooting.
So far this year, 19 NGO staff have been killed in militant attacks.
