Rep. Adam Schiff Adam Bennett SchiffTop Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence Overnight Defense: Top admiral says 'no condition' where US should conduct nuclear test 'at this time' | Intelligence chief says Congress will get some in-person election security briefings Overnight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies MORE (D-Calif.), the chairman of the House Intelligence Committee, said Sunday that Roger Stone Roger Jason StoneOur Constitution is under attack by Attorney General William Barr Justice IG investigating Stone sentencing: report Romney says Trump's protest tweets 'clearly intended to further inflame racial tensions' MORE will "need a much better defense" against charges he faces in special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's probe after he called the indictment "thin as piss on a rock."

Schiff, who appeared on ABC's "This Week" immediately after Stone was interviewed, said that the longtime confidant of President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE, who was indicted on seven federal counts Friday, is "presumed innocent."

ADVERTISEMENT

"But these are very specific allegations of lies and witness intimidation," Schiff added. "They’re matters that will be easily provable. These are not ambiguous statements. They’re very detailed. And I think he’s going to need a much better defense than the one you just heard.”

Rep. Adam Schiff responds to Roger Stone's denial of charges in the special counsel's indictment: "These are not ambiguous statements... I think he's going to need a much better defense than the one you just heard." https://t.co/BsxHgIP8si pic.twitter.com/WGmldiymT1 — This Week (@ThisWeekABC) January 27, 2019

Mueller's team, which is investigating Russian interference in the 2016 election, charged Stone with one count of obstruction of an official proceeding, five counts of false statements and a count of witness tampering.

The indictment also states that a top Trump campaign official was instructed to contact Stone to get information about the WikiLeaks hacks of Democratic emails ahead of the 2016 election.

Stone said Sunday on "This Week" that his attorneys view the indictment as "thin as piss on a rock" and predicted that he would be acquitted.

“In view of the fact that I expect to be acquitted and vindicated and that my attorneys … believe that this indictment is thin as piss on a rock, I’m prepared to fight for my life," Stone said.