WASHINGTON -- Planned Parenthood has argued for months that videos released by the Center for Medical Progress, an anti-abortion group, were "deceptively edited " to falsely suggest that the health care provider profits from the illegal sale of fetal tissue. It remains unclear exactly how the videos were produced -- and who edited them. The Huffington Post has now learned the identity of one of the editors, along with details about the creation of the videos.

Video editor Ryan Gonzalez spent at least 11 months working on the footage, according to his Facebook page and a friend of his who is familiar with the editing process. The friend requested to remain anonymous due to the sensitivity of the matter.

Gonzalez worked on the videos with David Daleiden, a self-described "citizen journalist" who started the Center for Medical Progress and who previously worked for the anti-abortion group Live Action.

Last year, the source said, Daleiden and Gonzalez met in an apartment in Orange County, California, to edit videos once or twice a week. In May 2015, they started meeting more frequently. Closer to the publication date, Daleiden was staying with Gonzalez in order to work on them full-time.

Gonzalez wrote on Facebook that he is "proud to call" Daleiden a "friend," and photos show them traveling together to Washington, D.C. That Facebook post, along with others referenced in this story, has been set to private.