Lord Janner allegedly abused children in the Houses of Parliament, an MP has claimed.
Labour's Simon Danczuk said he had met Leicestershire Police, who were investigating abuse allegations against the peer, and heard how children were "violated, raped and tortured - some in the very building in which we now sit".
Labour suspended Lord Janner in April when the Crown Prosecution Service (CPS) announced he would not stand trial for historic sex abuse allegations because of the ''severity'' of his dementia.
Addressing the allegations against the peer during a Westminster Hall debate on the CPS, Mr Danczuk said he had discussed the allegations with police which involved children "being violated, raped and tortured - some in the very building in which we now sit".
Mr Danczuk told MPs: "Returning to the case of Lord Janner, the shocking thing is that the CPS admits that the witnesses are not unreliable, it admits that Janner should face prosecution, but refuses to bring a case.
"I know the police are furious about this and rightly so.
"Anyone who has heard the accusations will be similarly outraged.
"I have met with Leicestershire Police and discussed the allegations in some detail. Children being violated, raped and tortured - some in the very building in which we now sit."