Deputy FBI Director Andrew McCabe's seven-hour behind-closed-doors testimony Tuesday conflicted with testimony of other witnesses, and more subpoenas will be issued next week to FBI and Justice Department employees, Fox News' James Rosen reported Wednesday.

Rosen said House Intelligence Committee staff would not confirm who was to receive those new subpoenas, but it likely will be DOJ official Bruce G. Ohr and FBI General Counsel James A. Baker.

A subpoena against Baker, who is the Justice Department's top lawyer might cause a "constitutional clash" between the legislative and executive branches, Fox noted.

"It's hard to know who's telling us the truth," a House investigator told Fox.

"I don't believe adequate answers were given," Rep. Peter King, R-N.Y., told Fox News Channel's "The Story with Martha McCallum." "So many unanswered questions. Questions which have not been resolved."

King said he still has no answer what role the "Trump dossier" played in commencing the probe into possible collusion between then-candidate Donald Trump's team and the Russian government to influence the 2016 election.

"We sort of take for granted this was an investigation against the presidential campaign," King said. "This is almost unprecedented. And I remember last year when we were told why it was begun and talking about all of these contacts, unprecedented contacts between the Trump campaign and Russia. Well, it turns out there were virtually none. And none of any substance."

According to sources quoted by Fox, McCabe was a "friendly witness" to Democrats on the committee, who tried without success to get him to give them testimony that would implicate Trump for obstruction of justice.

"If he could have, he would have," one participant told Fox.

The only thing in the infamous "dossier" McCabe could back up, sources said, was that campaign adviser Carter Page had traveled to Moscow.

"First of all, let me tell you Carter page's trip to Moscow was absolutely nothing there. That's clear," King told McCallum. "And to use that as any kind of excuse at all, even if that was only one of the bits of evidence they used to rely on that any way, to me was the irresponsible."

McCabe also told the committee he could not recall when he first learned the dossier had been funded by the Hillary Clinton campaign and the Democratic National Committee. Yet, Fox noted, documents reportedly exist with McCabe's signature that show he did know who funded the dossier.