Turner said the committee has made information on the threat available to all members of Congress, but declassifying the information was necessary so “Congress, the administration, and our allies can openly discuss the actions necessary to respond to this threat.”

No officials have specified the threat, but CNN reports the intelligence concerns “a highly concerning and destabilizing” Russian capability that intelligence officials were “recently made aware of,” citing an unnamed source.

Speaking at a White House press conference after Turner’s statement was released, National Security Advisor Jake Sullivan said he was “a bit surprised” by Turner’s remarks because he’d previously reached out to the Gang of Eight for a personal briefing and had a meeting on the books with Turner and the other house intelligence leaders set for tomorrow.

He declined to give any further details until that meeting but did not rule out declassifying material if it’s determined to be in the interest of national security.