A federal grand jury indicted an Alabama man for allegedly threatening the sheriff and district attorney in Fulton County, Ga., over their involvement in former President Trump’s criminal case.

The indictment, unsealed on Monday, charges Arthur Ray Hanson, II, 59, with two counts of transmitting interstate threats. Prosecutors say he left voicemails on Aug. 6 threatening the officials.

The alleged calls came days before Fulton County District Attorney Fani Willis (D) indicted Trump and 18 others in a sprawling racketeering case, accusing them of engaging in a conspiracy to keep Trump in power following the 2020 election. It is one of four criminal indictments Trump faces. He has denied any wrongdoing and pleaded not guilty to all the charges.

“When you charge Trump on that fourth indictment, anytime you’re alone, be looking over your shoulder,” Hanson said, according to court filings.