The Lincoln Project, a “Never Trump” organization, has hired an “outside professional” to investigate co-founder John Weaver’s time with the group.

Weaver, 61, has been accused by at least 20 young men of sexual harassment and last month admitted to sending sexually suggestive messages to several men over the years. The Lincoln Project’s Thursday announcement on the outside investigation came after the Associated Press reported leadership was informed in June of at least 10 specific allegations.