NEW: An internal investigation by Facebook has uncovered thousands of groups and pages, with millions of members and followers, that support the QAnon conspiracy theory, according to internal company documents reviewed by @NBCNews. https://nbcnews.to/2DMTsT0 

The top 10 groups identified in the investigation collectively contain more than 1,000,000 members, with totals from more top groups and pages pushing the number of members and followers past 3,000,000. It is not clear how much overlap there is among the groups.

The investigation’s preliminary results, which were provided to @NBCNews by a Facebook employee, shed new light on the scope of activity and content from the QAnon community on Facebook, a scale previously undisclosed by Facebook, because most of the groups are private.

The investigation will likely inform what, if any, action Facebook decides to take against its QAnon community, according to the documents and two current Facebook employees who spoke on the condition of anonymity because they were not authorized to speak publicly on the matter.

Facebook is considering an option similar to its handling of anti-vaccination content, which is to reject advertising and exclude QAnon groups and pages from search results and recommendations, an action that would reduce the community’s visibility.