ATLANTA (AP) — Leaders of Georgia’s Fulton County testified Friday before a special state Senate committee that they had no legal power to control District Attorney Fani Willis’ spending or her hiring of former special prosecutor Nathan Wade.

The Republican-led committee is probing Willis’ hiring of Wade to lead a team to investigate and ultimately prosecute Donald Trump and 18 others accused illegally trying to overturn the 2020 presidential election in Georgia. Willis and Wade have acknowledged a romantic relationship with each other.

In one example of the kind of threats Willis has been receiving, federal officials announced that a California man was indicted on April 24 on charges of transmitting interstate threats against Willis. Ryan Buchanan, the U.S. attorney in Atlanta, said Marc Shultz, 66, of Chula Vista made threatening comments against Willis in the comment streams of two YouTube videos in October, pledging violence and murder including a statement that she “will be killed like a dog.”