Right-wing author and conspiracy theorist Jerome Corsi said Sunday he welcomes the prospect of testifying against Roger Stone as part of special counsel Robert Mueller's investigation.

“I will be happy to testify, if — I would suspect to be subpoenaed — and I will let the testimony fall wherever it falls," Corsi said during an interview on CNN's "State of the Union" when asked whether he would be willing to testify against his former associate. "I'm going to tell the truth to the best of my ability. Even that's hard, given the amount of information and the fact that I have said from the beginning I'm not a human tape recorder. You can't push a button, and I can't recall precisely, in detail, granularly, conversations, emails, events from 2016. But I'm going to do my best to tell the truth without calculation of whom it benefits or whom it detracts.”

A grand jury impaneled for Mueller's investigation last week indicted Stone, a former longtime Trump confidant and adviser, on five counts of lying to Congress, one count of witness tampering, and another count of obstructing a congressional inquiry. Stone was arrested in Florida on Friday and appeared in court later that day.

Corsi has identified himself as “Person 1” cited in the indictment.

The charges stem from Stone's September 2017 interview with the House Intelligence Committee, which was looking at Russia's attempts to influence the 2016 election and U.S. intelligence and law enforcement agencies' response. The sit-down focused, in part, on WikiLeaks and its release of hacked materials from the Democratic National Committee and Hillary Clinton campaign chairman John Podesta during the 2016 campaign.

The indictment outlines several communications among Stone and “Person 1” and “Person 2” about WikiLeaks’ plans to release stolen emails from the Democratic Party during the 2016 presidential election.

Both Stone and Corsi have been questioned by federal investigators over whether they had advance knowledge of the WikiLeaks document dump. Corsi, who was InfoWars' Washington bureau chief, has said he suspected WikiLeaks had emails damaging to Clinton's campaign based on publicly available information as opposed to a backchannel with the organization. Corsi said late last year he rejected a deal from Mueller in which he would have agreed to pleading guilty to one count of lying to federal agents. He insists he has never intentionally misled prosecutors over what he knew.