Attorney General William Barr headed back into the office Sunday as the Justice Department works through the findings of Special Counsel Robert Mueller’s probe into Russian election meddling — and possible ties between President Trump’s campaign and the Kremlin.

Mueller delivered his long-awaited report to Barr late Friday and announced that his office will not seek additional indictments in the case, which has cast a cloud over the first two years of Trump’s administration.

Barr will decide how much of the report the public and Congress will see and could make his first findings available as soon as today.

He spent more than nine hours in the office on Saturday before returning there Sunday.

Top Democrats demanded this weekend that the entire report be released — save for redactions made to protect national security — and reiterated Sunday they are ready to subpoena the report, underlying information and administration officials to ascertain its contents if it is not.

“If that is the case, and they can’t hold him accountable, the only institution that can hold a president accountable is Congress, and Congress, therefore, needs the evidence and information,” New York City Rep. Jerry Nadler said on “Fox News Sunday.”

Nadler is the chairman of the House Judiciary Committee, which has the power to issue subpoenas.

“I suspect that we’ll find those words of transparency to prove hollow, that in fact they will fight to make sure that Congress doesn’t get this underlying evidence,” Rep. Adam Schiff of California, chairman of the House intelligence committee, said on ABC’s “This Week.”

With Post Wires