(CNN) Senate Intelligence Chairman Richard Burr appeared to brief the White House counsel's office about the targets of the FBI's Russia investigation in March 2017, special counsel Robert Mueller's report says.

The report states that then-FBI Director James Comey briefed the Gang of Eight — the Intelligence Committee and congressional leaders from both parties — about the investigation on March 9, 2017, before Comey revealed its existence publicly at a House hearing on March 20, 2017.

"The week after Comey's briefing, the White House Counsel's Office was in contact with (Senate Intelligence Committee) Chairman Senator Richard Burr about the Russia investigations and appears to have received information about the status of the FBI investigation," the report states.

In a footnote, the report states that the White House counsel's office was briefed by Burr, a North Carolina Republican, on the "existence of 4-5 targets,'" citing notes from former deputy White House Counsel Annie Donaldson. The notes included references to former national security adviser Michael Flynn , former Trump campaign chairman Paul Manafort, an individual whose identity was redacted due to an ongoing investigation, and "Greek Guy," which is likely George Papadopoulos — although the footnote also notes that the Intelligence Committee "does not formally investigate individuals as 'targets.'"

"The notes on their face reference the FBI, the Department of Justice and Comey; and the notes track the background materials prepared by the FBI for Comey's briefing to the Gang of 8 on March 9," the footnote says.

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