There was "an abundance of evidence" that Lord Janner knew a convicted child abuser, despite the former Leicester MP denying the pair knew each other, according to reports.
The peer was interviewed about Frank Beck - a care home manager and social worker in Leicestershire - after Beck was convicted over prolific child abuse in 1991.
According to the BBC, documents released through FOI requests show that Lord Janner denied having been in touch with Beck when he appeared before an inquiry in 1992 into Beck's years of abuse at children's homes.
Beck, who died in prison, had shouted Janner's name out in court in February 1991 when he appeared before magistrates charged with child abuse.
An inquiry that ended in January 2016 found "there was available an abundance of evidence that Janner knew Beck", and that "all of this would have been supporting evidence discrediting Janner".
Allegations that Lord Janner, who died in December last year, sexually abused children over a period spanning more than 30 years are being examined as part of a wide-ranging inquiry into child sex abuse.
His family have always denied the allegations.