Updated 1:30 p.m. | The Office of Government Ethics warns there is “cause for alarm” if the Senate proceeds with confirmation hearings for some of President-elect Donald Trump’s Cabinet nominees whose financial and other paperwork has not been certified by the agency.

In a letter to Senate Minority Leader Charles E. Schumer of New York and Massachusetts Democrat Elizabeth Warren that was released Saturday, OGE Director Walter M. Shaub Jr. says some of Trump’s nominees have yet to provide even preliminary financial disclosures to the federal ethics watchdog and that some nominees who are scheduled for Senate confirmation hearings have not completed the ethics review process.

Senate committees are scheduled to plow through the confirmation hearings for a slew of Trump picks next week, starting with Attorney General nominee Jeff Sessions and Homeland Security pick retired Gen. John Kelly on Tuesday. The Senate GOP leadership’s goal is to have people confirmed as quickly as possible after Trump is sworn into office.

“During this presidential transition, not all of the nominees presently scheduled for hearings have completed the ethics review process. In fact, OGE has not received even initial draft financial disclosure reports for some of the nominees scheduled for hearings,” Shaub wrote. “Despite the challenges current circumstances present, OGE’s staff and agency ethics officials have been working diligently in an effort to deliver expedited reviews that meet the Senate’s schedule.”

As of Saturday morning, the OGE had released the ethics agreement and financial disclosures for Sessions (Justice), Rex Tillerson (State), GOP Rep. Mike Pompeo of Kansas (CIA), Gen. James Mattis (Defense) and Scott Pruitt (EPA). The letter did not specify which Trump nominees have not submitted their ethics paperwork.