Pramila Patten, the United Nations special representative of the secretary-general on sexual violence in conflict, said she would raise accusations against the Myanmar military with the International Criminal Court in the Hague.
Myanmar military investigation into alleged atrocities against Rohingyas is a "whitewash", says rights group Amnesty International, calling for United Nations and independent investigators to be allowed into the country.
Also on Wednesday, Tillerson is expected to tell Senior General Min Aung Hlaing, commander-in-chief of Myanmar's armed forces, to end the violence in Rakhine to prevent Rohingya Muslims from fleeing to Bangladesh, Reuters reported, citing a U.S. State Department diplomat.
"Rohingya refugees need preventative and proactive action now to mitigate risks of human trafficking, and the survivors need help, before this spirals out of control", Ms. Ardanyan said.
The military, known as the Tatmadaw, has also been widely accused of mass rape, looting, torching villages and other crimes against humanity. The result of this inquiry show little has changed, reports the BBC.
Prior to August's operation, a five-month crackdown from October past year led to around 400 people being killed, according to Rohingya groups.
The UN documented mass gang rapes, killings - including of infants and young children - brutal beatings and disappearances committed by security personnel.
"The Burmese military's absurd effort to absolve itself of mass atrocities underscores why an independent worldwide investigation is needed to establish the facts and identify those responsible", Brad Adams of Human Rights Watch, said in a statement on Tuesday.
Suu Kyi has said that any alleged atrocities should be substantiated and investigated, while her government is working to stabilise Rakhine in order for the Rohingyas to return.
Rohingya, described by the U.N.as the world's most persecuted people, have faced heightened fears of attack since dozens were killed in communal violence in 2012. No reason for Maj Gen Maung Maung Soe's transfer was given, but a senior officer with the military's media department said the general had no new assignment, and had been placed on a reserve list.
Foreign secretary Md. Shahidul Haque and state secretary of the Danish Development Cooperation Martin Bille Hermann discussed the present Rohingya crisis and bilateral trade between two countries.
This article has been adapted from its original source.