"Humanitarian activities in Rakhine have either been suspended or severely interrupted, resulting in 170,000 people not receiving the food they usually receive and 15,000 people not receiving their primary health care," Stephane Dujarric, spokesman for the UN Secretary-General, told reporters at his daily briefing.
According to him, the Myanmar government has said that all 3,500 Muslims living in three camps in the Rathedaung township have left the site and are now believed to be heading to the Bangladesh border.
As of September 10, 313,000 people -- mostly women and children -- who left Rakhine since 25 August, have arrived in Cox's Bazar in Bangladesh.
"There is no indication that the pace of these arrivals is slowing," Dujarric said.
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The UN and its partners are helping the Bangladeshi government and the local community to respond to the situation by providing food, shelter, healthcare and water, among other means of support.
Noting that the UN and the Bangladesh government are also urgently looking at solutions to allocate land to accommodate the new arrivals, Dujarric said the scale and speed of the influx of people from Myanmar has overwhelmed the capacity on the ground and additional resources are needed.