From the BBC "UK ministers who backed sending asylum seekers to Rwanda were warned by their own adviser that its government tortures and kills political opponents".
"The warning came weeks before the British government tried to send asylum seekers to the African nation".
"The adviser raised concerns about the tone and accuracy of an official note on Rwanda's human rights record"
"There is an ongoing legal challenge against government attempts to keep more of the comments secret".
"Migrants identified for the aborted flight, and three media organisations - BBC News, including BBC Two's Newsnight, the Times and the Guardian newspapers - are seeking disclosure of the material".