Zinke, who left the Trump administration Wednesday, was facing two inspector general inquiries tied to his real estate dealings in his home state of Montana and his involvement in reviewing a proposed casino project by Native American tribes in Connecticut. In the course of that work, inspector general investigators came to believe Zinke had lied to them, and they referred the matter to the Justice Department to consider whether any laws were violated, the people familiar with the matter said.
The department’s public integrity section has since been exploring the case, the people familiar with the matter said, speaking on the condition of anonymity to discuss an ongoing investigation. The extent of its work is unclear, though the inspector general had questioned witnesses in an apparent attempt to scrutinize Zinke’s account, one of the people said.