Cameroon has deported 100,000 Nigerian refugees in the hope of stemming the spread of terrorist group Boko Haram.
This was contained in a statement by Human Rights Watch.
The group said in its new report that the deportation defied a plea by the UN refugee agency to not return anyone to north-eastern Nigeria, where Boko Haram killed thousands of people, until security and human rights situation improved considerably.
The Human Rights Watch report noted that the deported people were likely to face new violence, displacement and destitution.
The group, which investigates allegations of human rights abuses worldwide, says the report is based on interviews with more than 60 refugees.
The rights group claimed Cameroon deported, often violently, tens of thousands of the refugees since early 2015.
Since 2009, tens of thousands of people have died in the hands of Sunni fundamentalists in the region.
According to the UN, an estimated 2.7 million people fled their homes due to Boko Haram.