Justice Department and intelligence officials held classified briefings for lawmakers Thursday about the early stages of the FBI’s investigation into Russian meddling in the 2016 election, but it wasn’t immediately clear if the meetings had defused the dispute between the department and some Republican House members.

Congressional Republicans, backed by President Donald Trump, had sought the meetings after demanding access to sensitive information, including documents related to the FBI’s use of an American academic who talked in 2016 to at least two Trump campaign aides at the investigators’ behest.

Revelations of the informant’s involvement in the probe increased tensions between the Justice Department and the president, who has alleged that the FBI improperly embedded a spy in his campaign as part of an effort to damage him politically.

The FBI’s defenders say no one was “embedded,” and they have described the use of a confidential informant as typical in counterintelligence investigations. Department officials have been reluctant to provide lawmakers information about the informant, saying it would jeopardize his safety and hinder international partnerships.

Department officials declined to comment following the meetings, and Reps. Devin Nunes (R., Calif.) and Trey Gowdy (R., S.C.), the main lawmakers behind the push for more information, emerged without saying whether they were satisfied.