Seventy-one people have been killed in militant attacks in Myanmar's Rakhine state.
Local police said the simultaneous attacks targeted at least 26 outposts of the police, border guard police and security forces in northern Rakhine.
The raids took place on 30 posts on the Bangladesh frontier in the Maungdaw district and left a Myanmar solider, 10 police and an immigration official dead, the Office of State Counsellor Aung San Suu Kyi said in a statement.
"This can not lead to repeat of last year's vicious military reprisals responding to a similar attack, when security forces tortured, killed and raped Rohingya people and burned down whole villages".
Terrified civilians have fled remote villages in northern Myanmar after violence between suspected Rohingya militants and security forces killed dozens of people.
Communities in Myanmar's Rakhine state face a "real risk" of radicalisation if ethnic tensions are not addressed, reports a United Nations independent commissions led by former United Nations chief Kofi Annan adding that a response combining political, security and developmental initiatives is needed to ensure violence does not escalate.
Guterres "reiterates the importance of addressing the root causes of violence, in particular issues related to identity and citizenship, and reducing inter-communal tensions", his spokesperson said.
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In October past year, Rohingya militants attacked several security checkpoints and killed scores of police officers.
Friday's violence pushed more Rohingya to leave, with two boats containing around 150 women, children and elderly people attempting to cross the Naf river into Bangladesh. "We must not allow our work to be derailed by the violent actions of extremists", she said.
State Department spokesperson Heather Nauert said Saturday that Myanmar's security forces should respect the rule of law while fighting insurgents.
But most who made it to the border with Bangladesh were stranded, as the government in Dhaka effectively closed its border with Myanmar.
Annan said he was "gravely concerned" by the latest outbreak of fighting.
Amid continued bloodshed in Rakhine State of Myanmar and subsequent influx of Rohingyas towards Bangladesh, Myanmar troops yesterday fired twice at fleeing Rohingyas near the border in Bandarban.
In December 2016, More than a dozen Nobel laureates criticized fellow peace prize victor Aung San Suu Kyi for not doing enough to curb the "ethnic cleansing and crimes against humanity" against minority Rohingya Muslims in the country. According to the Rohingyas and some scholars, they are indigenous to Rakhine State, while other historians claim that the group represents a mixture of precolonial and colonial immigrations.