'Walking Dead' Showrunner Glen Mazzara Departs Following Fourth Season Renewal

Walking Dead

"The Walking Dead" has been renewed for a fourth season — but it'll move forward without its current showrunner.

AMC has announced that the massively popular zombie drama will be returning for a fourth year, but without executive producer Glen Mazzara running the series. TV Line cites creative differences between Mazzara and AMC, leading to the show runner's "amicable" departure.

"Glen guided the series creatively for seasons 2 and 3," reads a statement from the network. "AMC is grateful for his hard work. We are both proud of our shared success. Both parties acknowledge that there is a difference of opinion about where the show should go moving forward, and conclude that it is best to part ways. This decision is amicable and Glen will remain on for post-production on season 3B as showrunner and executive producer."

Mazzara confirmed the news on Twitter, saying, "I've had an amazing experience as showrunner for S3 @WalkingDead_AMC but it's time to move on. Thank you to all the fans for their support. The #WalkingDead fans are absolutely amazing. I cannot thank you enough for your support. Thank you to an immensely talented cast and crew."

This marks the second showrunner to leave "The Walking Dead" under surprising circumstances. Frank Darabont was removed from the show shortly before the second season premiere. "Walking Dead" has always been a ratings juggernaut, but much of its recent critical acclaim has been attributed to Mazzara's work running the series. In other words, it's a very tough act to follow.

Tell us what you think of the "Walking Dead" news in the comments below or on Twitter!