Myanmar’s army has used unfathomable levels of violence against minority Rohingya, UN investigators said Tuesday, calling for the military to be removed from politics and top generals to be prosecuted for genocide.

The UN report, which laid out in meticulous detail a vast array of violations committed by the country’s powerful military, came just hours before the International Criminal Court’s prosecutor announced a preliminary probe into crimes against Rohingya Muslims.

‘It is hard to fathom the level of brutality of Tatmadaw operations, its total disregard for civilian life,’ head of the UN fact-finding mission Marzuki Darusman told the UN Human Rights Council, referring to the nation’s military.

Myanmar’s ambassador to the UN, Kyaw Moe Tun, slammed Tuesday’s report as ‘one-sided’ and ‘flawed’.

The ICC’s preliminary examination could lead to a formal investigation and then possible indictments.

‘I have decided to proceed to the next phase of the process and to carry out a full-fledged preliminary examination of the situation at hand,’ ICC prosecutor Fatou Bensouda said in a statement.

A brutal military crackdown last year forced more than 700,000 Rohingya to flee over the border into Bangladesh amid accounts of arson, murder and rape at the hands of soldiers and vigilante mobs in the mainly Buddhist country.

Myanmar’s army has denied nearly all wrongdoing, insisting its campaign was justified to root out Rohingya insurgents who staged deadly raids on border posts in August 2017.

The UN team said the military’s tactics had been ‘consistently and grossly disproportionate to actual security threats’, and said that estimates that some 10,000 people were killed in the crackdown was likely a conservative figure.

It said there were reasonable grounds to believe that the atrocities were committed with the intention of destroying the stateless Rohingya, warranting the charges of ‘genocide’.

A shorter version of the mission’s report, published last month, had already called for Myanmar’s army chief and five other top military commanders to be prosecuted in an international court for genocide.

In his presentation, Darusman provided excruciating details of massacres in Rohingya villages, pointing out that ‘the men were systematically killed. Children were shot, thrown into the river or onto a fire’.

Women and girls meanwhile were routinely gang-raped before being locked inside burning houses.

Of those who survived, many had been severely bitten, in what appeared to be ‘akin to a form of branding,’ he said.

Darusman said the ‘scale, cruelty and systematic nature (of the sexual violence) reveal beyond doubt that rape is used as a tactic of war’.

The UN analysis decried the army’s hold on political life in Myanmar, which only recently emerged from almost a half century of total military junta rule.

The military holds a quarter of seats in parliament and controls three ministries, making its grip on power firm despite reforms beginning in 2011.

Aung San Suu Kyi’s democratically-elected government remains in a delicate power balance with the generals, whose presence in parliament gives them an effective veto on constitutional changes.

‘There cannot be any democratic transition in Myanmar unless the Tatmadaw relinquishes its control of the politics, of the economy and of the constitution,’ UN investigator Christopher Sidoti told reporters.

‘We have seen not the birth of democracy in Myanmar, regrettably, but the stillbirth.’

The UN mission said Suu Kyi’s government had also helped enable the widespread rights violations in Myanmar by allowing hate speech against the Rohingya to flourish and using civilian laws to crack down on media and others speaking out against abuses.

The investigators directed specific criticism at Suu Kyi, whose global reputation has been shattered by her failure to speak up for the Rohingya against the military.

While acknowledging that the civilian authorities have little influence over military actions, the report said that their ‘acts and omissions’ had ‘contributed to the commission of atrocity crimes’.

Pointing to ‘deeply entrenched’ impunity in Myanmar, the investigators said the only chance to obtain accountability was through the international justice system.

The announcement of the ICC probe comes nearly two weeks after judges ruled that even though Myanmar has not signed up to the Hague-based court, it still has jurisdiction over crimes against the Rohingya because Bangladesh is a member.

Myanmar has, however, dismissed the court’s authority and analysts have pointed to its lack of enforcement powers.

Bensouda said the initial probe ‘may take into account a number of alleged coercive acts having resulted in the forced displacement of the Rohingya people, including deprivation of fundamental rights, killing, sexual violence, enforced disappearance, destruction and looting.’

Among the UN’s other recommendations were an arms embargo and targeted sanctions against individuals deemed most responsible.

It also called for a ‘comprehensive, independent inquiry’ into the UN’s own role in Myanmar since 2011, warning that ‘quiet diplomacy’ appeared to have sidelined those pushing to loudly denounce rights violations.

Meanwhile, British foreign minister Jeremy Hunt arrived in Myanmar on Wednesday for a busy two-day trip in which he will visit the epicentre of the Rohingya crisis and meet embattled civilian leader Aung San Suu Kyi.

The trip comes a day after UN investigators released a damning and meticulous report outlining why senior Myanmar generals should be prosecuted for genocide against the Rohingya Muslim minority, who were driven from Rakhine state into Bangladesh last year.

Myanmar rejected the independent fact-finding mission’s report as one-sided. But global pressure is building on the country and the chief prosecutor of the International Criminal Court separately announced this week that she was opening a preliminary investigation.

Hunt’s is the most high-profile visit by a UK representative since his predecessor Boris Johnson came in February.

‘I’m in Burma this week to see first-hand some of the issues around the humanitarian crisis faced by the Rohingya people,’ he said in a video posted on his Twitter account, using the Buddhist-majority country’s former name.

The foreign secretary (minister) began with a stop-off at a small Yangon museum honouring political prisoners both past and present before a visit to the glittering Shwedagon Pagoda.

He asked about censorship and military influence but did not take questions from the media.

On Thursday he will take an army-chaperoned helicopter trip to northern Rakhine state, where the brutal military crackdown which began in August 2015 drove out more than 700,000 Rohingya.

He will then head to the capital Naypyidaw for meetings with Suu Kyi, whose government took power in 2016 in a much-celebrated transition to democracy after decades of military rule.

But the Nobel laureate’s reputation quickly crumbled for her failure to speak up for the Rohingya.

Under the junta Myanmar jailed thousands of political prisoners. But while many were released as the country opened up to the outside world more than 20 are currently behind bars, according to the Assistance Association for Political Prisoners.

The group says this includes two Reuters journalists, Wa Lone and Kyaw Soe Oo, who were jailed earlier this month for seven years each after they exposed a massacre of 10 Rohingya men and boys during the military crackdown.

Myanmar says they broke the official secrets act but Reuters and press freedom advocates have described the trial as little more than an attempt to punish reporting on Rakhine.

‘I hope that he (Hunt) can put pressure on the government and military groups to move forward our democratisation and peace process,’ said AAPP’s Kyaw Soe Win.

Suu Kyi is in a power-sharing agreement with the military, which controls a quarter of parliament’s seats and three ministries.

UN investigators stopped short of calling for her to face prosecution but condemned civilian authorities for ‘acts and omissions’ that ‘contributed to the commission of atrocity crimes’.

Hunt has promised to raise both the Rohingya crisis and the case of the Reuters journalists in his meeting with Suu Kyi.

The UN has called for Myanmar army chief Min Aung Hlaing and five other top generals to be investigated for genocide, war crimes and crimes against humanity for overseeing operations in Rakhine.