West Timor "must be made ready to receive huge numbers of refugees and their security forces," the document adds.
The militias have driven up to 150,000 people to West Timor.
West Timor has an average unemployment rate of 2.39%.
The provincial capital is not located on the island, but in West Timor.
Another American victim was one of three aid workers killed in West Timor.
Most trucks were destroyed or sent into West Timor in the mass evacuation.
Nearly 200,000 are taking refuge in West Timor, waiting for emergency assistance and protection to return home.
A quarter of the population flees, mainly to West Timor.
Many militia members flee to West Timor to avoid arrest.
A much larger number live in the surrounding part of West Timor.