The clash started due to images released by Human Rights Watch showed more than 300 villages burnt in three Rohingya villages. (Representative image)
At least 28 insurgents were killed over two days of fighting in western Rakhine state on Sunday, Myanmar's military said.
The military said 22 insurgents were killed near Dar Gyi Zar village after they attacked soldiers of which two died and another six killed were killed elsewhere.
Rohingya activists uploaded a video late Saturday which showed eight corpses dressed in civilian clothes, including a small baby.
The narrator, speaking in Rohingya said the victims were killed near Dar Gyi Zar village, some bodies riddled with bullets.
According to AFP, the authenticity of the video could not be verified.
The latest clashes come after satellite images released by Human Rights Watch showed more than 400 buildings torched in three Rohingya villages.
Brad Adams, the group's Asia director, said the new photos showed "widespread destruction" that was "greater than we first thought".
"Burmese authorities should promptly establish a UN-assisted investigation as a first step toward ensuring justice and security for the victims," he said in a statement.
The government and the military denied any involvement and accused the Rohingya's.
The region is home to Rohingya Muslims, who are in conflict with the majority Buddhists.
(WION with inputs from AFP)