The Kokang Self-Administered Zone’s capital Laogai, in northern Shan State, came under attack early Monday morning, with a spokesman for the coalition of ethnic armed groups identifying itself as the Northern Alliance saying one of its members was responsible for the assault.

The military has ended a clearance operation in Burma’s troubled Arakan State, government officials said, ending a four-month sweep that the United Nations said may amount to crimes against humanity and possibly ethnic cleansing.

Calls for an independent commission to investigate alleged human rights abuses in Arakan State were raised on Monday by the United Nations special adviser on the prevention of genocide, who said the current government-appointed body was not up to the task.

Zaw Htay told reporters that details of the arrests could not be presently disclosed to avoid compromising the investigation.

The government has vowed to “take action” against Burmese police officers seen abusing detainees in Arakan State after a video of the incident made the rounds online over the weekend.

A man has been found dead with stab wounds in Burma’s Arakan State, in what the government said on Monday was the second murder in under a week of a Rohingya who cooperated with authorities as they crack down on suspected insurgents.