UPDATE: A source close to Warner Bros. Television told CBR the number of Season 1 episodes was reduced to 10 from the original order of 13, as a result of “creative decisions.” Swamp Thing will premiere May 31 on DC Universe, as previously announced.

DC Universe's Swamp Thing has reportedly ended production early, much to the surprise of the cast and crew.

According to Star News Online, the local news publication for Wilmington, North Carolina (where Swamp Thing was being shot), production on the series was brought to an abrupt halt. The internal announcement is that the season was reduced from 13 episodes to 10, and reportedly, the writers for the series have reconvened to write a new ending.

RELATED: Swamp Thing: Matt Ryan Wants To Play Constantine On DC Universe Show

The news was corroborated by co-star Virginia Madsen, who plays Maria Sunderland. On Instagram, she wrote, "I’m beyond sad. What a terrible decision. We have been cut to the core by those who have never set foot into the Swamp. And despite the rule I am going to use the hashtag. #swampthing." The post was deleted but was picked up on by the Wilmington newspaper.

Executive produced by James Wan, Mark Verheiden, Gary Dauberman, Michael Clear and Len Wiseman, Swamp Thing will premiere sometime on May 31 on the DC Universe. The supernatural horror series stars Crystal Reed, Andy Bean, Derek Mears, Jennifer Beals, Henderson Wade, Will Patton, Virginia Madsen, Jeryl Prescott, Henderson Wade and Kevin Durand.

KEEP READING: DC Universe's Swamp Thing Release Date Is Sooner Than You Think