The head of the House intelligence committee said on Wednesday he had information about a serious national security threat and urged the administration to declassify the information so the US and its allies can openly discuss how to respond. Mike Turner, an Ohio Republican, gave no details about the nature of the threat in his statement. The White House also declined to provide details. Turner’s announcement appeared to catch the Biden administration off guard. The national security adviser, Jake Sullivan, told reporters at the White House he already had been due to brief Turner and other senior congressional leaders on Thursday. Sullivan did not disclose the topic or provide any other details related to Turner’s statement. “I’m focused on going to see him, sit with him as well as the other House members of the Gang of Eight, tomorrow,” Sullivan said. “And I’m not in a position to say anything further from this podium at this time.” He acknowledged it was not standard practice to offer such a briefing. “I’ll just say that I personally reached out to the Gang of Eight. It is highly unusual, in fact, for the national security adviser to do that,” Sullivan said. He said he had reached out earlier this week. He would not say whether the briefing was related to Turner’s warning. “I leave it to you to draw whatever connections you want,” he told reporters. Johnson said he sent a letter last month to the White House requesting a meeting with the president to discuss “the serious national security issue that is classified”. He said Sullivan’s meeting was in response to his request.