Rep. Darrell Issa and Ambassador Thomas Pickering have reached a deal that will allow the diplomat to appear for a closed-door meeting with investigators for the congressman.

The agreement led Issa (R-Calif.), the chairman of the House Oversight and Government Reform Committee, to lift his subpoena on Pickering, who who co-authored the State Department’s independent report on the Benghazi attack.

“Today, Ambassador Pickering reached an agreement with the Oversight Committee to voluntarily appear for a transcribed interview and answer all questions posed by Committee investigators,” Issa said in a statement. “As such, I have lifted his legal obligation to appear tomorrow for a deposition. His appearance for a transcribed interview with Committee investigators has been rescheduled for a date in the near future.”