In addition to being the executive producer, Darabont wrote and directed The Walking Dead‘s first episode and had a hand in writing every other episode. The The Walking Dead is based on the comic book by Robert Kirkman, who is also listed as executive producer.
The Walking Dead is Darabont’s first foray into television, after a career in movies which includes directing famous Stephen King adaptations (the Shawshank Redemption, the Green Mile) and writing the screenplay for A Nightmare On Elm Street 3: Dream Warriors.
The story that Darabont left the show comes from this article on Deadline, and has yet to be confirmed.
The Walking Dead has already begun filming its second season, which is set to premier October 16th.
AMC confirmed the story, and gave this statement:
The Walking Dead‘s Glen Mazzara, writer and executive producer, is expanding his responsibilities to assume the role of showrunner. AMC is grateful to executive producer, writer and pilot director Frank Darabont whose contributions to the success of The Walking Dead are innumerable. We continue to discuss his ongoing role with the series.
Robert Kirkman, creator of The Walking Dead graphic novels, executive producer and writer on the series, will remain in this role and will continue to steward the brand. Gale Anne Hurd will remain in her role as Executive Producer. The production continues on schedule for an October 16th premiere.