Thailand began a census of Burmese refugees at the country's largest camp on July 21st.

The army now running the government says it will send home to Myanmar about 100, 000 of the refugees who've been living in camps along the border for more than two decades.

(SOUNDBITE)(Thai) COLONEL TERDSAK NGAMSANONG, COMMANDER OF 4TH INFANTRY REGIMENT, SAYING:

"The census will have a long-term benefit for repatriation. In the future we will have the same database to share with UNHCR and other organisations."

But the United Nations High Commission for Refugees is warning those sent back to Myanmar will face serious dangers.

(SOUNDBITE)(English) VIVIAN TAN, UNHCR SPOKESPERSON, SAYING:

"Some of the challenges include the absence of a permanent ceasefire, the presence of landmines and mine fields that have never been marked. There is a critical shortage of infrastructure and services. There is limited livelihood opportunity so all of this affects the sustainabili