Rep. Adam Schiff (D-Calif.), the chairman of the House Intelligence Committee, said Sunday that Roger Stone will “need a much better defense” against charges he faces in special counsel Robert Mueller’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, who was indicted on seven federal counts Friday, is “presumed innocent.”

{mosads}”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.