The House Intelligence Committee on Tuesday will begin writing a resolution holding top FBI officials in contempt of Congress after the agency missed a Monday deadline to turn over key evidence the committee has been seeking for months.

House Intelligence Committee Chairman Devin Nunes, R-Calif., has accused the FBI and Department of Justice of a “months-long pattern … of stonewalling and obstructing this committee’s oversight work.”

Those accusations boiled over during the weekend, after stories were leaked to the New York Times and Washington Post saying that FBI agent Peter Strzok, a key investigator in the Trump-Russian probe, was removed from the Russia probe after exchanging text messages critical of Trump to another FBI agent he was involved with romantically. Republicans had been seeking information about why he was removed, but were never told anything by FBI or Justice Department directly.

Nunes had also been seeking information about the FBI and Justice Department’s use of the Steele dossier, which contains damning but unverified information about President Trump.