But United Nations representatives were given their first access to Rakhine since the trouble erupted, in a visit that came as Bangladesh Foreign Minister A.H Mahmood Ali held talks with Myanmar's Minister of the Office of State Counselor Kyaw Tint Swe.
"The Rohingya have faced decades of persecution and targeted violence in Myanmar, but the recent attacks that began just over a month ago are of an entirely new scale and level of inhumanity", Refugees International President Eric Schwartz.
An estimated 2,000 Rohingya are arriving in Bangladesh every day, Joel Millman of the International Organization for Migration, told a separate briefing.
Rohingya Muslim's traveled 12 miles through jungles to the Myanmar border to Bangladesh, fleeing the ethnic cleansing due to Burma not recognizing them as an ethnic group in the Rakhine state and claiming that they are living in the country illegally, reported the Independent.
"Half a million people do not pick up sticks and flee their country on a whim", he said, reiterating the world body's appeal for access to the widely-displaced population in Rakhine and saying the existing circumstances are "unacceptable".
Addressing a joint press event, Tusk said the two sides wanted de-escalation of tensions and full adherence to worldwide obligations in Myanmar and access of people to humanitarian aid.
Aid agencies have warned of a malnutrition crisis with about 281,000 people in Bangladesh in urgent need of food, including 145,000 children under five and more than 50,000 pregnant and breastfeeding women.
Lausanne University professor wins Nobel Prize for chemistry
By dropping samples in ethane cooled by liquid nitrogen to -196 degrees Celsius, Dubochet created breathtakingly sharp images. The water that surrounds the molecules evaporates, and the high energy electrons burn and destroy the molecules.
But Mr Lowcock said he believed a "high-level" team would be able to visit the area in the next few days.
Hindus and ethnic Rakhine were also among the dead.
Myanmar's military have blamed the unrest on the Rohingya.
Myanmar leader Aung San Suu Kyi has faced criticism for not doing more to stop the violence, although a military-drafted constitution gives her no power over the security forces.
United Nations -led aid bodies have appealed for $434 million over six months to help up to 1.2 million people - including 300,000 Rohingya already in Bangladesh before the latest crisis and 300,000 Bangladeshi villagers in so-called host communities.
The government is set to launch a massive vaccination campaign for the Rohingya refugees, to protect over half a million victims of forced exodus from onslaughts of cholera after administering their kids with polio vaccines, officials said on Wednesday. To add to it, Haque said that Bangladesh had given a written proposal to Myanmar on the repatriation of the immigrants.