A new report claims Russian President Vladimir Putin gave direct instructions to help elect Donald Trump president.
According to a Washington Post investigation, former President Barack Obama received a secret CIA report in August.
That report "captured Putin's specific instructions on the operation's audacious objectives - defeat or at least damage the Democratic nominee, Hillary Clinton".
CBS News confirmed last year that US intelligence officials knew that the Russian government operation to interfere in the US election had been approved by Mr Putin himself, but they were reluctant to reveal how much they knew out of concern that sources and methods could be compromised.
The Post reports that US intelligence agencies had sourcing deep inside the Russian government capturing Mr Putin's direct instructions in the operation.
The Post also reports that before he left office, Mr Obama set in motion a secret program that authorised the deployment of "implants" in Russian networks - digital bombs that could be triggered in a retaliatory cyberstrike in the event of Moscow aggression - and that it would be up to Mr Trump to decide to use the capability.
CBS News confirmed that Obama officials felt that their effort to expel Russian diplomats in retaliation was undermined by the incoming administration.
Determining whether that is true is part of the ongoing investigations. CBS News has confirmed that congressional investigators are looking into whether Trump campaign associates obtained information from hacked voter databases during the election.
So far there is no evidence of that, but it is a sign that the congressional investigations are expanding.