More than 6,700 Rohingya Muslims killed in first month by army

At least 6,700 Rohingya Muslims were killed in the first month of a Myanmar army crackdown, which the army terms as crackdown on rebels in Rakhine state, that began in late August, Medecins Sans Frontieres (MSF) said on Thursday.

The figure is the highest estimated death toll yet of violence that erupted on August 25 and triggered a massive refugee crisis, with more than 620,000 Rohingya fleeing Myanmar for Bangladesh in three months.

The UN and US have described the military operation as ethnic cleansing of the Muslim minority, but have not released specific estimations of a death toll.

"At least 6,700 Rohingya, in the most conservative estimations, are estimated to have been killed, including at least 730 children below the age of five," MSF said.

The group's findings come from six surveys of more than 2,434 households in Rohingya refugee camps and cover a period of one month.

"What we uncovered was staggering, both in terms of the numbers of people who reported a family member died as a result of violence, and the horrific ways in which they said they were killed or severely injured."

For children under five, nearly 60% died after being shot, the survey found.

Gunshot wounds were the cause of death in 69% of the cases. Another 9% were reported burned alive inside houses, while 5% died from fatal beatings.