U.K ministers who backed sending asylum seekers to Rwanda were warned by their advisers 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.
The first Rwanda flight was grounded in June after the European Court of Human Rights said the High Court in London must first fully examine whether the removals policy is lawful.
A hearing is scheduled for next month.
On Tuesday, the government asked the High Court to rule that the case should not include 11 specific comments about Rwanda from an unnamed Foreign Office (FCDO) official, who had been asked for their view.