Government watchdog Judicial Watch issued a lawsuit against the Department of Justice Friday after officials failed to produce or deny the existence of communications between fired FBI Director James Comey and Special Counsel Robert Mueller.

Judicial Watch requested the documents in a Freedom of Information Act request last year and was told DOJ could "neither confirm nor deny that the specific items you seek exist or do not exist as mere acknowledgment of these items would require the FBI to confirm or refute these assumptions.”

Here is what they're looking for in the fresh lawsuit:

All records of communications between former FBI Director James Comey and Special Counsel Robert Mueller, or members of SC Mueller’s investigative committee, relating to the return of memoranda of conversations, memoranda to the file or notes regarding same generated by Comey following conversations with government officials during his tenure as FBI Director.

Comey is currently on tour selling his book, A Higher Loyalty. He didn't run the transcript by Mueller before publishing despite being a potential witness in the Special Counsel investigation. However, he did get it approved through the proper channels at the FBI.

"Did Comey improperly funnel his dishonest memos and collude with the Mueller special counsel operation as part of a vendetta against President Trump?” Judicial Watch President Tom Fitton released in a statement. “Why is the DOJ still protecting James Comey and the out-of-control Mueller operation?”