Ivanka Trump used a personal email account to discuss official White House business with aides and cabinet officials, a report said on Monday.

The president’s eldest daughter sent hundreds of emails under the private account, with a domain that was shared by her husband, Jared Kushner, throughout 2017, according to the Washington Post.

Ivanka Trump and Kushner are both top aides to President Trump.

The personal account came to the attention of ethics officials who were reviewing emails sent to cabinet agencies as part of a public records request.

A spokesperson for Ivanka’s lawyer told the New York Post that the president’s daughter rarely used the private account while beginning her role in the administration.

“While transitioning into government, until the White House provided her the same guidance they had to others who started before she did, Ms. Trump sometimes used her private account, almost always for logistics and scheduling concerning her family,” the spokesman, Peter Mirijanian, said in a statement.

The use of personal email for government business could violate the Presidential Records Act and increases the risk that sensitive information could be hacked.

President Trump made Hillary Clinton’s use of a private email account during her tenure as secretary of state a focal point of his 2016 presidential campaign.