"Now, we will start the next step of our work," Bangladesh Foreign Minister A H Mahmood Ali told reporters.
In a statement, Bangladesh foreign office said that the working group will develop physical arrangements for the refugees' return, including mechanisms for verification, time schedule, transport and logistical arrangements, reception procedures and communication.
It said the working group would "ensure commencement of repatriation within two months".
The joint working group "shall involve assistance of the UNHCR and other mandated UN agencies and interested international partners in various stages of repatriation".
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The joint panel was formed in line with the November 23 memorandum of understanding signed by Myanmar with Bangladesh to take back hundreds of thousands of Rohingyas who fled their homeland to escape a military crackdown.
The development came a day after UN human rights body chief Zeid Ra'ad al-Hussein said he would not be surprised if a court one day ruled that acts of genocide had been committed against the Rohingya Muslim minority.
Meanwhile, US-based Human Rights Watch today termed the November 23 agreement as a mere "public relations stunt", saying Maynmar Army burned dozens of buildings within days of signing the repatriation deal with Bangladesh.
The rights group, citing analysis of satellite imagery, said buildings in 40 villages were destroyed in October and November, increasing the total to 354 villages that had been partially or completely razed since last August.
Over 655,000 Rohingyas fled across the border to Bangladesh since the crackdown began on August 25, bringing horrific accounts of rape, extrajudicial killing and arson.
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