Special counsel Robert Mueller, whose team is investigating Russia's interference in the 2016 election, reportedly obtained thousands of emails from officials involved in President Trump's transition team.

The news site Axios reported Saturday that Mueller obtained the emails as part of his investigation from the General Services Administration agency, which hosted the email system.

"The transition emails are said to include sensitive exchanges on matters that include potential appointments, gossip about the views of particular senators involved in the confirmation process, speculation about vulnerabilities of [President] Trump nominees, strategizing about press statements, and policy planning on everything from war to taxes," Axios reported.

Mueller's expansive probe is also looking into whether Trump's campaign colluded with Russia to influence the election.

Mueller has used the trove of transition-period emails to question administration and transition officials and to develop new leads in his investigation, according to the report.

White House Special Counsel Ty Cobb denied that there are plans to fire Mueller.

“As the White House has consistently said for months, there is no consideration of firing the Special Counsel," he said in a statement.