President Donald Trump's erstwhile campaign adviser Carter Page told the House intelligence committee that he informed senior campaign officials about a much-scrutinized trip he made to Russia in July 2016.

He also confirmed that he had other interactions with multiple representatives of the Russian government, including a "private conversation" with the country's deputy prime minster.

The roughly eight hours of testimony, held behind closed doors Nov. 2, came as part of the House intelligence committee's investigation into Russian interference in the 2016 presidential election and potential collusion between members of the Trump team and representatives of the Russian government.

Page testified that he had told at least four officials about his July trip: then-campaign chairman Corey Lewandowski, spokeswoman Hope Hicks and advisers J.D. Gordon and Tera Dahl.

Lewandowski, he testified, greenlighted the trip, telling him, "if you'd like to go on your own, not affiliated with the campaign, you know, that's fine," Page said.

Page testified that he also told Attorney General Jeff Sessions, then a Republican senator for Alabama and outspoken supporter of the Trump campaign, about his upcoming trip. Page said he made the remarks "briefly" and "in passing" after a dinner with several other campaign officials.

"I mentioned it briefly to Senator Sessions as I was walking out the door, that I'm, you know – I'm – because I remember it was actually right – I forget the exact date, but it was the Thursday night before I flew to Moscow to give my speech. So I mentioned to him in passing, so – as we were walking out the door."

Page shared with the committee emails that he'd sent to campaign officials. One appears to seek their input on remarks he would be giving during his visit.

"Please let me know if you have any reservations or thoughts on how you'd prefer me to focus these remarks," Page wrote.

Another email, sent after his trip, offers to provide a summary of the "incredible insights" from meetings he'd had with members of the Russian government.

"I'll send you guys a readout soon regarding some incredible insights and outreach I received from a few Russian legislators and senior members of the presidential administration here," Page wrote.

Among the officials he met with was Russian Deputy Prime Minister Arkady Dvorkovich. Page testified that the two had a "private conversation" following his remarks. Page also testified that he met with "a couple of legislators," as well as "some senior government officials."

The release of the transcript is unusual and apparently came at the request of Page himself. The former adviser appeared before the committee without a lawyer, and his testimony, spread across 243 pages, was often contradictory, at times stoking confusion and consternation among the committee members who were questioning him.

His testimony, though, offers yet more evidence that senior Trump campaign officials were at least aware of, and perhaps encouraged, interactions between campaign members and representatives of the Kremlin.

Last week, the Justice Department special counsel that's also investigating Russian election meddling unsealed a guilty plea in which another Trump adviser, George Papadopoulos, testified that he had informed and even been encouraged by senior Trump campaign officials to meet with Russian representatives promising incriminating information on Hillary Clinton.