The mission found that so-called "clearance operations" by Myanmar security forces had driven almost 700,000 Rohingya refugees into Bangladesh since August - and that many Rohingya were killed in such operations: "People died from gunshot wounds, often due to indiscriminate shooting at fleeing villagers".
The council was told elderly, people with disabilities, and young children have been burned alive in their homes and the military were involved in gang rapes.
United Nations investigators have blamed Facebook for playing a role in the possible genocide in Myanmar by disseminating hate speech, reports the Guardian.
Noting that Rohingya Muslims have been killed, tortured, raped, burnt alive and humiliated, Dieng said: "Let us be clear: global crimes were committed in Myanmar. Others were hacked to death". The UN also voiced "strong suspicions" that Myanmar's ethnic Rohingya might be the victims of "genocide" and continued "ethnic cleansing". "I am becoming more convinced that crimes committed".
"I'm afraid that Facebook has now turned into a beast, and not what it originally intended", she said, replying to a question about the merit of the social media platform in the country, which began transitioning to a democracy in 2011.
The Myanmar army has denied accusations of brutality against the Rohingya in northern Rakhine, saying its own investigations have cleared soldiers of the alleged abuses.
Myanmar has said that it is prepared to take back Rohingya refugees who want to voluntarily return to northern Rakhine state, if they can prove that they lived in the region prior to October 9, 2016, when soldiers launched a smaller-scale crackdown in response to deadly ARSA raids on border guard stations.
According to The Guardian, Lee also called for the creation of an independent body to investigate and gather evidence of human rights violations.
Social media has "substantively contributed to the level of acrimony and dissension and conflict", Darusman told reporters on March 12.
UN Myanmar investigator Yanghee Lee said that "everything is done through Facebook in Myanmar", adding it has been used to spread hate speech.
'And I am afraid that Facebook has now turned into a beast than what it was originally meant to be used in other parts of the world too, ' she added.
Wirathu, a prominent face of Myanmar's Buddhist ultra-nationalist movement, had amassed hundreds of thousands of followers on the network, using it as a platform to attack Muslims, singling out the stateless Rohingya minority.