A Democratic lawmaker who is a member of the House Intelligence Committee wants the panel to interview cybersecurity expert Matt Tait as part of its probe into Russsian interference in the 2016 elections after Tait said he was recruited to collude with the Russians by a Republican opposition researcher likely tied to Trump's campaign.

"The House Intelligence Cmte should hear from Matt Tait ASAP," tweeted Texas Rep. Joaquin Castro, in response to Tait's late-Friday blog post titled "The Time I Got Recruited to Collude with the Russians."

Tait, who is the CEO and founder of U.K.-based Capital Alpha Security, revealed himself to be an unnamed source in recent Wall Street Journal reports about Republican opposition researcher Peter W. Smith, who reportedly tried to obtain emails thought to be stolen from Hillary Clinton's private email server, and his ties to former national security adviser Mike Flynn and other Trump officials.

Tait described a number of factors he believes show Smith was working with Trump's blessing. That included Smith's apparent knowledge of the inner-workings of Trump's campaign, an opposition research document with a 'Trump campaign' group and the repeated references to needing to avoid campaign reporting.

Smith, the Journal reported, said he had no connections to the Trump campaign. He died about a week and a half after he gave an interview with the Journal, the newspaper said in its first report on the man on Thursday. He had reportedly been seeking the more than 30,000 emails from Clinton's unauthorized server as secretary of state that she said were personal and were deleted rather than handed over to investigators. Though there is no evidence that Clinton's server had been hacked, former FBI Director James Comey said it is possible that it was breached.