Months after leaving the White House, former President Donald Trump allegedly discussed potentially sensitive information about U.S. nuclear submarines with a member of his Mar-a-Lago Club – an Australian billionaire who then allegedly shared the information with scores of others, including more than a dozen foreign officials, several of his own employees, and a handful of journalists, according to sources familiar with the matter.

The potential disclosure was reported to special counsel Jack Smith’s team as they investigated Trump’s alleged hoarding of classified documents at Mar-a-Lago, the sources told ABC News. The information could shed further light on Trump’s handling of sensitive government secrets.