Senior members of the Trump administration’s National Security Council — including its top national security adviser, Michael Waltz — used Gmail to conduct government business, The Washington Post reported, citing documents and three unnamed government officials.

Mike Waltz, who faced calls to resign over the Signal chat scandal, has sparked new scrutiny with his reported use of Gmail for official work.

National Security Adviser Mike Waltz used his personal Gmail for government communications, sparking security concerns. Reports indicate he discussed military plans on his personal email, despite denying the use of Gmail for classified information.