A former spokesperson for the Oath Keepers, a far-right “militia” organization, will appear as a witness at the House Jan. 6 committee’s next public hearing Tuesday, a source familiar with the plans said.

While he was not part of the Oath Keepers, whose members have pleaded guilty to seditious conspiracy in connection with the riot or with events during or leading up to Jan. 6, 2021, the source said, Jason Van Tatenhove is expected to speak about the group’s propaganda efforts and radicalization over the years, including how founder Stewart Rhodes capitalized on conspiracy theories to build membership and funding.

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