(NewsNation) — The Kentucky sheriff arrested in connection with the fatal shooting of a local judge in his courthouse chambers pleaded not guilty during a virtual court appearance Wednesday morning.

Authorities say Letcher County Sheriff Shawn “Mickey” Stines, 43, shot District Judge Kevin Mullins multiple times last Thursday following an argument in the courthouse. Mullins, 54, died at the scene.

Stines, according to The Mountain Eagle, allegedly walked into the judge’s outer office, then told court employees and others gathered there that he needed to speak with Mullins alone. After the two walked into the judge’s chambers, witnesses heard shots. Stines walked out with his hands up and surrendered to police.

Stines was charged with one count of first-degree murder. Police have not revealed a motive.

According to the Associated Press, a brief arrest citation from Thursday says: “Perpetrator used a firearm to shoot … Letcher County District Judge Kevin Mullins. Judge Mullins succumbed to his injuries after the shooting.”

Mullins was shot at 2:55 p.m., and Stines’ arrest came five minutes later, per the citation, which has no other information related to the shooting.

During court Wednesday, Carter County District Judge H. Rupert Wilhoit III questioned if Stines was indigent and needed to be appointed a public defender. Public Defender Josh Miller argued that Stines will soon lose his job, and a legal team to defend himself could cost hundreds of thousands of dollars.

Kentucky Gov. Andy Beshear’s general counsel called on Stines to submit his resignation to Letcher County’s judge-executive by the end of Friday, the Associated Press reported.

Wilhoit ultimately allowed Miller to defend Stines as a public defender at the next hearing, which he set for October. The judge told Stines, though, that this could change in future court proceedings.

The Associated Press contributed to this report.