A Nevada veterinarian died by suicide amid massive backlash to a video showing him beating a horse.
The body of Shawn Frehner, 56, was recovered from Lake Mead on April 18 - nearly two weeks after he vanished.
The Office of the Clark County Coroner and Medical Examiner has since ruled that Frehner died of drowning - with the use of pentobarbital as a contributing factor, KTNV reports.
The drug, which Frehner injected himself with, is used for euthanizing animals, according to News 3 LV.
Frehner had been facing felony animal abuse charges when he disappeared on April 6, after he was filmed abusing a horse he had been called out to help.
