FILE - Noor Islam, from Taung Bazar village in Buthidaung township, poses for a picture with a satellite image of his burnt village in Myanmar, at the Kutupalong camp in Cox's Bazar, Bangladesh, October 15, 2018.
FILE - Noor Islam, from Taung Bazar village in Buthidaung township, poses for a picture with a satellite image of his burnt village in Myanmar, at the Kutupalong camp in Cox's Bazar, Bangladesh, October 15, 2018.

VOA's Ira Mellman contributed to this report.

The U.N. human rights office says it fears dozens of Rohingya Muslims were killed in a military helicopter attack last week, far higher than the initial death toll of seven.

Spokesperson Ravi Shamdasani, of the Office of the High Commissioner for Human Rights in Geneva, said Monday, "We are now receiving reports that the number may be much higher than that.We have unconfirmed reports that the number may be as high as 30."

Villagers in Buthidaung township said a military helicopter attacked a group of Rohingya who were gathering bamboo on Thursday.

Shamdasani said Myanmar's military has blamed the attack on "terrorists who were supporting the army." However, she said the Office of the High Commissioner for Human Rights rejects that accusation.

FILE - Rohingya refugee women carry baskets of dried out mud from the riverbed to help raise the ground level of their camp in preparation for monsoon season, in Shamlapur refugee camp, in Cox's Bazaar, Bangladesh, March 24, 2018.
Efforts Underway to Help Rohingya in Bangladesh Weather Next Monsoon Season
The U.N.

Myanmar's military blamed the attack on terrorists who support the army.

Shamdasani said the Office of the High Commissioner for Human Rights rejects that accusation.

She said Myanmar's government must ensure "that civilians are not targeted and that heavy artillery is not used in civilian areas on the pretext of national security."

Special Rapporteur on the situation of human rights in Myanmar, Yanghee Lee gives her report to the Human Rights Council at the United Nations in Geneva, Switzerland, March 11, 2019.
UN: Hundreds of Thousands of Rohingya Refugees Face Uncertain Future
Investigator says Bangladesh's welcome of Rohingya refugees is wearing thin and the situation in Myanmar is too dangerous for them to return

Myanmar's western Rakhine state has drawn international attention in recent years following attack by Myanmar's army against ethnic Rohingya which forced more than 700,000 refugees across the border into Bangladesh.The government says the actions were in response to attacks by Rohingya insurgents on police posts.

The United Nations has accused Myanmar's army of acting with "genocidal intent."

Myanmar regards Rohingya as illegal migrants from the Indian subcontinent.