Kuala Lumpur:Malaysia has sent about 1,086 Myanmar nationals back to their homeland, defying a court's order and appeals from the human rights group to halt the process.
Rights organisations say the group includes some ethnic minorities who have suffered persecution in Myanmar, the BBC reported.
They say that sending them back to Myanmar, which is in the midst of a coup, could put them at even greater risk.
But Malaysia has said those being sent back committed immigration offences, and are not asylum seekers.
"All of those returned had agreed to be sent back voluntarily without being forced by any party," Khairul Dzaimee Daud, Malaysia's Director-General of Immigration, said in a statement.
Read:|Malaysia court stays order on Myanmar deportees
Daud added that those being repatriated did not include Rohingya refugees or asylum-seekers, echoing an earlier statement by Malaysia that it would not deport those registered with the UN High Commissioner for Refugees (UNHCR).
However, authorities have blocked the UNHCR from accessing immigration detention centres in Malaysia for more than a year, according to reports - which means the UN is unable to confirm Daud's statement.
"Before sending anyone back to a situation where they could face persecution, the Malaysia government should... ensure that UNHCR has access to detention centres... so the international community can be assured that it is not sending people into harm's way," said rights group Human Rights Watch (HRW).
The UNHCR also added that at least six people registered with the organisation were among the deportees, according to a news agency report.
Rights groups also said that asylum seekers from the minority Chin and Kachin communities, who are fleeing persecution, are among those being deported.