A Kentucky judge whom authorities said was fatally shot by a sheriff last week was remembered Sunday as a pioneer who fought against opioid addiction and favored treatment over jail for low-level drug offenders.

Later that day, Stines, 43 – a man whose role made him responsible for judge’s personal security – fatally shot Mullins, 54, inside the Letcher County courthouse in Whitesburg, according to Kentucky State Police. Stines was arrested at the courthouse and is now facing a first-degree murder charge, authorities said.

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