Washington (CNN) House Intelligence Committee Chairman Devin Nunes hinted Friday that there would be additional memos released regarding the committee's investigation into alleged abuse of FISA warrants -- and the next one may look at the State Department.

On Friday, President Donald Trump approved the declassification of a highly controversial memo, spearheaded by Nunes, that alleges FBI abuses of its surveillance authority.

When asked on Fox News if more memos would come out, the California Republican responded: "Yes, this completes just the FISA abuse portion of our investigation."

Nunes went on to say that the "investigation is ongoing."

"We are in the middle of what I call 'phase two' of our investigation, which involves other departments," Nunes said. "Specifically the State Department and some of the involvement they had in this."

Read More