In a new tweet, Ray Fisher, the actor who played Cyborg in the 2017 DC Superhero film Justice League, has doubled down on his previous claims that Warner Bros. and DC Films Head Walter Hamada undermined the Justice League misconduct investigation.

“Do ya’ll remember that time Walter Hamada and @wbpictures tried to destroy a Black man’s credibility, and publicly delegitimize a very serious investigation, with lies in the press?” Tweeted Fisher on Saturday. “But hey, Black Superman,” He finished, referencing the recent announcement that Warner Bros. and DC Films had brought on Ta-Nehisi Coates to write a new original Superman film.

WarnerMedia responded in defense of Hamada and the investigation.

“Once again there are false statements being made about our executives and our company surrounding the recent ‘Justice League’ investigation,” WarnerMedia told Variety. “As we have stated before, an extensive and thorough third-party investigation was conducted. Our executives, including Walter Hamada, fully cooperated, no evidence was found of any interference whatsoever, and Warner Bros. did not lie in the press. It’s time to stop saying otherwise and move forward productively.”

Formal Federal Judge and Investigator on the misconduct allegations, Katherine B. Forrest, also released a statement regarding Fisher’s claims.

“I am disappointed by continued public statements made suggesting that Walter Hamada in any way interfered with the ‘Justice League’ investigation. He did not,” Forrest said. “I interviewed him extensively on more than one occasion and specifically interviewed him concerning his very limited interaction with Mr. Fisher. I found Mr. Hamada credible and forthcoming. I concluded that he did nothing that impeded or interfered with the investigation. To the contrary, the information that he provided was useful and advanced the investigation.”

Fisher responded back to Forrest and WarnerMedia later that day. “As I’ve said from the start: Walter Hamada ATTEMPTED to interfere with the JL investigation. He was unsuccessful in doing so because I did not allow him to,” Fisher posted. “Having the investigator make a statement claiming there was no interference is purposely misleading and desperate.”

This is only the latest chapter of Fisher’s struggle regarding the Justice League investigation and his future working with WarnerMedia. The actor is set to appear in Zack Snyder’s Justice League, the four-hour cut of the film releasing to HBO Max March 18. Fisher has continued to promote the upcoming cut even with the ongoing difficulties between him and Warner Bros.