Sheikh Hasina demanded that Burma “take steps to take their nationals back”, and assured temporary aid until that happened.

“We will not tolerate injustice,” she said at a rally at the Kutupalong refugee camp, near the border town of Ukhiya in Cox’s Bazar district.

On Monday night, she lambasted Buddhist-majority Burma for “atrocities” that she said had reached a level beyond description, telling lawmakers she had “no words to condemn Burma” and noting that Bangladesh had long been protesting against the persecution of Rohingya Muslims.

At least 313,000 Rohingya have flooded into Bangladesh since August 25, when Rohingya insurgents attacked police posts, prompting Burma’s military to retaliate with what it called “clearance operations” to root out the rebels.

The crisis has drawn sharp criticism from around the world.

The UN human rights chief said the violence and injustice faced by the ethnic Rohingya minority in Burma – where UN rights investigators have been barred from entry – “seems a textbook example of ethnic cleansing”.