Multiple outlets are reporting lawyers for former national security adviser John Bolton have spoken with House lawmakers about the possibility of Bolton testifying in the impeachment inquiry.
According to NBC News, investigators working with the inquiry are negotiating with Bolton's legal team in the hopes of scheduling a closed-door deposition.
Bolton has already come up several times in other officials' testimony about Ukraine and the White House.
Fiona Hill, the president's former top Russia adviser, reportedly told lawmakers that Bolton was so disturbed by efforts to get Ukraine to investigate President Trump's political rivals that he likened it to a "drug deal." Hill also reportedly said Bolton had described the president's personal lawyer Rudy Giuliani as a "hand grenade."
Meanwhile, the top U.S. diplomat to Ukraine, Bill Taylor, told lawmakers earlier this week that Bolton "opposed" the phone call between President Trump and Ukraine's president in July.
Bolton left the Trump administration in early September following a series of disagreements with the president. At the time, Bolton said he'd resigned, while President Trump has insisted that he was fired.
Additional reporting from Newsy affiliate CNN.