The chief of staff and senior counselor to FBI Director Christopher Wray is expected to meet with the House Oversight Committee Thursday.

A spokesperson for House Oversight confirmed to the Washington Examiner that Jim Rybicki is expected to testify as part of the committee’s investigation into the Department of Justice’s probe in Hillary Clinton’s private email server, and the decision by then-FBI Director James Comey to announce there would be no criminal charges against the former secretary of state and 2016 Democratic presidential nominee.

Rybicki will also appear before the House Judiciary Committee, an aide told the Washington Examiner.

The joint investigation was announced by the House Oversight and Judiciary committees in December, when Judiciary Chairman Bob Goodlatte, R-Va., and Oversight and Government Reform Committee Chairman Trey Gowdy, R-S.C., outlined information they are seeking to determine what role Justice Department and FBI officials played in various probes, including the Clinton probe.

In a letter to department leadership, they requested interviews with Rybicki, FBI Deputy Director Andrew McCabe and Lisa Page, an FBI lawyer who traded anti-Trump text messages with another FBI agent who had also been assigned to special counsel Robert Mueller’s Russia investigation.

McCabe was the first to be questioned, having been grilled just before the Christmas holiday and just before it was announced he would retire in early 2018.

The FBI did not immediately respond to a request for comment.