A Kentucky sheriff allegedly shot a judge early Thursday afternoon. Here's a look at the motive behind the Letcher County shooting.

WHITESBURG, Ky. (AP) — The sheriff charged with murder in the shooting of a rural Kentucky judge in his courthouse chambers was accused in a federal lawsuit of failing to investigate allegations that one of his deputies repeatedly sexually abused a woman in the same judge’s chambers.

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.