The Huffington Post's Michael Calderone reported Wednesday that Brad Plumer and Sarah Kliff, both of whom worked with Klein on the Post's Wonkblog, will be joining Klein's new venture at Vox Media.
A memo circulated by the post confirmed that WaPo foreign policy blogger Max Fisher is also departing for Vox.
Klein already confirmed that fellow WaPo colleagues Melissa Bell and Dylan Matthews were leaving the newspaper with him. Slate's Matt Yglesias, a personal friend of Klein, will also be a part of the new venture.
Klein joined the Post in 2009 at the age of 24.
This post has been updated.