The person who leaked U.S. classified documents prompting a national security investigation is a gun enthusiast in his 20s who worked on a military base, The Washington Post reported on Wednesday, citing fellow members of an online chat group.

The person shared classified information to a group on the instant messaging platform Discord of about two dozen men and young boys who shared a "mutual love of guns, military gear and God," the Post said.

The Post based its report, which did not name the person, on interviews with two members of the Discord chat group.