At least six of Donald Trump's advisors have used private email accounts to talk about matters relating to the White House, according to both current and former officials.
It has already been reported that Jared Kushner, the President's son-in-law and confidante, sent or received roughly 100 emails relating to the White House on a private account during the first seven months of the administration.
But now it is claimed advisors Stephen Bannon, Reince Priebus, Gary Cohn and Stephen Miller also used private email accounts for work at some points, according to the New York Times.
Newsweek also claims that Ivanka Trump used a private email account for her unpaid work in the White House at the start of the administration, and occasionally when she was being paid for her work.
It is not illegal for officials to use private emails as long as they forward the messages to their work email accounts, which can be made available to the public.
However, Trump often criticised Hillary Clinton for using a private email address whilst working as Secretary of State.
The FBI investigated the situation however did not recommend that she should be charged, but Trump has called for another investigation.
Despite the similarities between the two, Clinton's emails were on a private server and she sent or received tens of thousands of work emails.
It is not completely clear how many private emails have been sent or received from Trump's team.
White House press secretary Sarah Huckabee Sanders has said all officials have been told to use their official email accounts for work.
She added: "They are further instructed that if they receive work-related communication on personal accounts, they should be forwarded to official email accounts."