Cabinet Secretary Sir Jeremy Heywood has written to the shadow Cabinet Office minister to say "there has been no contact from officials" with former No 10 policy adviser Patrick Rock since his arrest over allegations linked to child abuse images.
David Cameron is facing claims of a Downing Street cover-up after a senior aide was arrested on suspicion of an offence related to child abuse images.
Patrick Rock quietly resigned last month after officials were made aware of a potential offence, but Labour MPs have been asking why it took Number 10 so long to disclose the news.
ITV News Political Correspondent Libby Weiner reports:
Sources close to the Prime Minister have dismissed talk of a cover-up, saying Mr Cameron had spoken out "as soon as he could".
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.