Cabinet Secretary Sir Jeremy Heywood has said "there has been no contact from officials" with former No 10 policy adviser Patrick Rock following his arrest over allegations linked to child abuse images.
Responding to Labour's Jon Ashworth who wrote to him demanding further details, Sir Jeremy said he tried "to respond to your specific questions but, as you recognise, in doing so my overriding concern must be to avoid doing anything to prejudice or undermine an on-going police investigation."
He added that the decision not to reveal the claims was made to avoid “jeopardising either [the police’s] investigation or the possibility of a prosecution”.
Labour's shadow cabinet office minister has written to the country's top civil servant asking "a number of important questions" over the arrest of the Prime Minister's former deputy policy adviser over allegations linked to child abuse images.
Following claims of a Downing Street cover-up, Jon Ashworth said there were legitimate concerns "given that Mr [Patrick] Rock had a senior role at the heart of Government."
He asked the Cabinet Secretary Sir Jeremy Heywood for information surrounding Number 10's decision to report Mr Rock to police, including when David Cameron was first made aware of the claims.