Liz Heron was named to an interim editorial committee tasked with finding a new editor to lead the site. | Getty Huffington Post executive editor Liz Heron resigns

Huffington Post's former executive editor Liz Heron has resigned from the news site, multiple sources familiar with the matter told POLITICO.

Heron joined The Huffington Post in October 2015. When Huffington Post co-founder editor Arianna Huffington stepped down in August, Heron was not named interim editor, but instead was named to an interim editorial committee tasked with finding a new editor to lead the site. It is not clear how close that committee is to naming Huffington's successor.

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Huffington Post CEO Jared Grusd sent a memo Tuesday afternoon telling staff that Heron was leaving.

"Arianna hired Liz to help us plug into the new media world order - one in which distributed content, video, mobile, audience development and the role of data have changed the way media companies think about their journalism," Grusd wrote. "Liz has indeed led us to embrace these changes; she has been a true innovative presence here, leading us to new territories and expanding so many aspects of our coverage. She embodies the pioneering spirit that defines HuffPost, and I can’t wait to see how she carries that spirit, together with all she’s accomplished here, into her career’s next chapter."

For the time being, Heron will consult with the John S. and James L. Knight Foundation on digital media initiatives, she said in a Facebook post announcing the news.

"For the past year, I've had the pleasure of working with some of the smartest, fiercest and most creative people in media at The Huffington Post, and now it's time for me to explore what's next," Heron wrote. "I'm so proud of what we've accomplished together ... I'll be rooting for the great people at HuffPost as they start a new chapter."