"DOJ is informing us we will not receive the report until around 11/12 tomorrow afternoon — AFTER Barr’s press conference. This is wrong," Nadler said via Twitter on Wednesday.
Barr and US Deputy Attorney General Rod Rosenstein are supposed to hold a press conference at 9:30 a.m. EST to review the report, Politico reported.
Nadler also said he is "deeply troubled" by reports that the White House is being briefed on the Mueller report ahead of the release.
The report will be released to both Congress and the public, Justice Department spokeswoman Kerri Kupec told reporters on Tuesday.
READ MORE: ‘So Obviously Bad Faith': Dems Dismissive of Mueller Report They Once Hailed
According to a summary released by Barr last month, Mueller’s team concluded that while there was no collusion Russia did interfere in the election.
Russian officials have said the allegations were made up to excuse the election loss of Trump’s opponent as well as deflect public attention from actual instances of election fraud and corruption.