Members of the protest group Herndon Reston Indivisible and Kremlin Annex hold signs saying "Full Report," outside the White House in Washington, Monday, March 25, 2019, as they protested for the complete results to be released of special counsel Robert Mueller‘s investigation into Russian election interference and possible coordination with associates of President Donald Trump. (AP Photo/Jacquelyn Martin)

WASHINGTON — Special counsel Robert Mueller’s Russia investigation report is more than 300 pages long, a Justice Department official and another person familiar with the document said Thursday.

Attorney General William Barr released a four-page summary of the report on Sunday and is expected to release a public version of the document in the coming weeks. The length of Mueller’s report makes clear that there are substantially more details he and his team have documented in their investigation than Barr disclosed to Congress and the public in his summary.

The Justice Department official said Attorney General William Barr discussed the length of the report during a phone call Wednesday with House Judiciary Committee Chairman Rep. Jerrold Nadler.

Both the department official and the other person spoke on condition of anonymity to discuss the confidential report.

Nadler, a Democrat from New York, had said Wednesday that the report was fewer than 1,000 pages, though he declined to discuss an exact length.

between Russia and the Trump campaign to swing the 2016 presidential election in President Donald Trump’s favor, according to Barr’s summary. But the report reached no conclusion on whether Trump had sought to obstruct the investigation. Barr said that he and Deputy Attorney General Rod Rosenstein had determined that there was insufficient evidence to conclude that Trump had obstructed justice.

The New York Times first reported that the report was more than 300 pages.