More than 880 people have been charged with crimes related to the attack on Jan. 6, 2021, the Justice Department said. Earlier this year, Edward Kelley, 33, was one of many people arrested on suspicion of illegally entering the U.S. Capitol and assaulting an officer.

According to the FBI, Kelley later discussed plans with 26-year-old Austin Carter to kill law enforcement personnel who had worked in his criminal investigation, and made a list of targets. Court records show that a witness provided the list of 37 names to a local Tennessee police department Tuesday.

“You guys are taking them out at their office,” said Kelley, who was allegedly recorded by the unidentified witness on Wednesday. “What you and Austin need to do is recruit as many as you can, call who you need to, and you’re going to attack their office.”

When the witness asked if the attack was taking place at the Knoxville office, Kelley said yes.

Carter later told the witness that “this is the time, add up or put up” and ”to definitely make sure you got everything racked, locked up and loaded.”

Attorneys for Kelley and Carter did not immediately return messages for comment.

Kelley and Carter made their appearance in court Friday in Knoxville before U.S. Magistrate Judge Jill E. McCook. They are charged with conspiracy, retaliating against a federal official, interstate communication of a threat and solicitation to commit a crime of violence.

“Federal law enforcement agents put their lives on the line every day to protect the public,” U.S. Attorney Francis M. Hamilton III said in a press release Friday. “Planning and threatening violence against them is among the most serious of crimes. It is absolutely unacceptable and will be vigorously investigated and prosecuted.”

The two men are scheduled for a preliminary hearing Jan. 3. Meanwhile, Carter’s detention hearing is scheduled for Wednesday.