The intelligence was made public, in part, in a cryptic announcement on Wednesday by Representative Michael R. Turner, Republican of Ohio and the chairman of the House Intelligence Committee. He called on the Biden administration to declassify the information without saying specifically what it was.

His committee took the unorthodox move of voting on Monday to make the information available to all members of Congress — a step that alarmed some officials because it is not clear in what context, if any, the intelligence in the panel’s possession was presented. In a note to lawmakers, the House Intelligence Committee said the intelligence was about a “destabilizing foreign military capability.”

Representative Jim Himes, Democrat of Connecticut and the ranking member of the House Intelligence Committee, said that the issue was “serious” and that Mr. Turner was right to focus on it. But he added that the threat was “not going to ruin your Thursday.”