The attacks in Rakhine state in western Myanmar have spiraled into chaotic violence, with more than 100 dead and villages torched.
At least 18,000 Rohingya have fled the violence and crossed into Bangladesh in less than a week, with hundreds stranded in a no man's land at the countries' border, the International Organization for Migration said.
The army, responding to last Thursday's attacks, launched what it called clearance operations against the insurgents, but advocates for the Rohingya say they are attacking and burning Rohingya villages, shooting civilians and causing others to flee.
Rohingya advocates fear the death toll for civilians is much higher.
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Most of Myanmar's estimated 1 million Rohingya live in northern Rakhine state. They face severe persecution in the Buddhist-majority country, which refuses to recognize them as a legitimate native ethnic minority, leaving them without citizenship and basic rights.
Longstanding tension between the Rohingya Muslims and ethnic Rakhine Buddhists erupted in bloody rioting in 2012. That set off a surge of anti-Muslim feeling throughout the country.
He criticised the civilian government of Aung San Suu Kyi for not responding quickly to the army's call Tuesday for a meeting of the National Security and Defense Council, which could declare a state of emergency in Rakhine and give the military absolute authority to enforce it. The military holds a majority on the council, which was created by the 2008 military-drafted constitution.
"Only the military's commander in chief can protect the lives and the properties of the people," Wirathu said. "The military is the only one that can give a lesson to tame the Bengali terrorists."
Wirathu also denounced international aid groups that the government has accused, without evidence, of giving assistance to the Rohingya insurgents. The allegations have circulated widely on social media.
The Information Ministry yesterday said that 45 homemade bombs were detonated and seven villages, one security post and two neighborhoods in the township of Maungdaw were burned down on Sunday and Monday.
Maungdaw, in the northern part of Rakhine state, is a center of the violence, though villages over a much wider area were also hit.
At the United Nations, the Security Council got an emergency, closed-door update Wednesday on Myanmar, at Britain's request. The council didn't issue any statement as a whole, but British Ambassador Matthew Rycroft said members condemned the violence and called on all the parties involved to de-escalate tensions.
The UN refugee organization on Tuesday urged Bangladesh to continue to allow Rohingya fleeing violence to seek safety. It said it was ready to help Bangladesh with assistance for the refugees.
Bangladesh Prime Minister Sheikh Hasina asked the United States on Wednesday to pressure Myanmar so its government would stop pushing Rohingya toward Bangladesh, her spokesman said.
Hasina made the request during talks with Alice Wells, US acting assistant secretary of state for South and Central Asia, said Ihsanul Karim, Hasina's press secretary.
The insurgent raids last Thursday were deadlier than an attack by the militants on three border posts last October that killed nine policemen and set off months of brutal counterinsurgency operations against Rohingya communities.