Baroness Royall was made a vice chair of that inquiry.
Speaking to the JC about the Royall report in July, Ms Chakrabarti said: “My impression is that the NEC redacted it because there were individuals involved who were then referred for disciplined.
“So my understanding is that is what happened there.”
Ms Chakrabarti, the former director of human rights group Liberty, added: “I know it is going to upset people when you can’t publish in full, but I almost feel like it was a hybrid enquiry.
“Because it was a bit thematic like mine, but also quite specific and Baroness Royall referred individuals who were in that report, to be disciplined, so obviously pending the discipline [It could not be published].”
The report contains no names and no redactions.
The JC has approached Ms Chakrabarti for a further explanation of what details of Baroness Royall’s report she had seen when conducting her own investigation.
John Trickett MP, Shadow Business Secretary and a member of Labour's NEC, said Ms Chakrabarti "found the work that Baroness Royall did on behalf of the Labour Party immensely useful and that much of her work was integrated into the Chakrabarti Report that has been fully accepted by the Labour Party".
Read the full Royall report here.