CIA Director Mike Pompeo has been interviewed by special counsel Robert Mueller’s team that is probing Russian involvement in the 2016 election and whether President Trump obstructed justice, according to a report.

Pompeo and Dan Coats, the director of national intelligence, who has also been grilled by Mueller, are described as “peripheral witnesses” to Trump’s firing of former FBI Director James Comey, NBC News reported Wednesday.

The network also revealed that former acting Attorney General Sally Yates — who informed the White House that Michael Flynn, then the national security adviser, could be vulnerable to blackmail because he lied to the FBI about his contacts with Russians during the campaign — is cooperating in the investigation.

The news comes a day after reports said Attorney General Jeff Sessions was interviewed last week and Comey was quizzed last year by Mueller’s investigators.

Trump’s lawyers are also working out terms for a sit-down with Mueller’s team, which is looking into why the president ousted Flynn and Comey, the Washington Post reported.

The interview could happen as early as next week, the newspaper said.

At Tuesday’s White House briefing, press secretary Sarah Huckabee Sanders said the president would cooperate.

Former White House top strategist Steve Bannon has been subpoenaed by Mueller and could appear next week.

Comey reportedly was questioned about memos he wrote after a meeting with Trump during which the president asked for his loyalty and asked if he could end the investigation into Flynn, who left the White House in February 2017.

Trump fired Comey in May 2017 and initially said it was because he mishandled the investigation into Hillary Clinton’s use of a private email server.

A few days later, in an interview with NBC News, Trump acknowledged that he sacked Comey while thinking of “this Russia thing.”

Mueller has already interviewed former White House chief of staff Reince Priebus and former press secretary Sean Spicer.

Former Trump campaign chairman Paul Manafort and his business associate Rick Gates have been charged in Mueller’s investigation. They have pleaded not guilty.

Flynn and former campaign adviser George Papadopoulos have pleaded guilty to lying to the FBI.