The United Nations refugee agency is expected to begin moving some 19,000 Afghan refugees from a precarious makeshift camp in Chaman, on the Pakistan border.
A UNHCR spokeswoman, Maki Shinohara, said an agreement was reached with the Pakistani government about a month ago, to close the camp and relocate the refugees because of security concerns.
The operation will start with the removal of the first group of around a-hundred families.
They will eventually be re-established at either the Zhare Dasht temporary camp near the main southern Afghan city of Kandahar or to a camp in Pakistan.
From the newsroom of the BBC World Service