During Wednesday’s House Oversight Committee hearing, Gregory Hicks, the deputy chief of mission at the U.S. Embassy in Triploli, Libya, confirmed that he was told by the State Department not to speak to members of Congress while they were investigating details of the Benghazi consulate attacks.

Hicks testified that State Department lawyers instructed him to avoid an interview with Rep. Jason Chaffetz, R-Utah, who traveled to Libya to investigate the attacks.

“I was instructed not to allow the RSO, the acting deputy chief of mission and myself to be personally interviewed by Congressman Chaffetz,” Hicks replied when questioned by Rep. Jim Jordan, R-Ohio.

Chaffetz is a member of the House and Oversight Committee.

Hicks detailed another conversation he had with Cheryl Mills, the counselor and chief of staff to Secretary of State Hillary Clinton, after he complied with the congressional delegation.

According to Hicks, Mills was “very upset” that he spoke to investigators in a classified briefing without a State Department lawyer present.