Justice Department spokesperson Kerri Kupec said Monday that a redacted version of special counsel Robert Mueller's report is expected to be released on Thursday morning.

What to watch: The report is expected to be around 400 pages, not including underlying evidence. Attorney General Bill Barr said he would color code redacted information that falls into 4 categories, and that each redaction will include explanatory notes.

Those categories include:

Material subject to Federal Rule of Criminal Procedure (6e) that cannot be made public.

Material the intelligence community identifies as potentially compromising sensitive sources and methods.

Material that could affect other ongoing matters, including those that the special counsel has referred to other department offices.

Information that would unduly infringe on the personal privacy and reputational interests of peripheral third parties.

Barr told a House Appropriations subcommittee that once the redacted version of the report is sent to Congress, he would be "glad to talk to [House Judiciary] chairman Nadler and [Senate Judiciary] chairman Graham as to whether they feel they need more information and see if there’s a way we could accommodate that."

Barr said that he doesn't believe he has the latitude to release grand jury material and that he doesn't intend to ask a judge to unseal it. He added, however, that Nadler is free to make the request if he wants.

Go deeper: Behind the scenes: The White House prepares for Mueller week