District Judge Kevin Mullins was shot inside the Letcher County Courthouse. Kentucky State Auditor of Public Accounts Allison Ball confirmed Mullins was the shooting victim in a post on social media.

Kentucky State Police are searching for motive as they investigate the fatal shooting of a district judge by a sheriff after the two had an argument inside the judge’s chambers, according to police.

Letcher County Sheriff Mickey Stines, accused of killing Mullins, once served as a bailiff in the judge’s courtroom.