Acting Attorney General Matthew Whitaker revealed on Friday that the U.S. attorney for the Eastern District of California, Greg Scott, sat in on a briefing Whitaker received on special counsel Robert Mueller’s probe.

It’s unclear why or in what capacity Scott sat in on the briefing. It’s also not clear the circumstances of the briefing.

Whitaker said that he does not recall discussing the briefing with any other individuals and said that members of his team are generally instructed not to share information on investigations.

The acting attorney general’s comments came during a House Judiciary Committee hearing on Friday as Rep. David Cicilline (D-RI) quizzed Whitaker as to whether any information about the Mueller probe was passed on to the White House.