Caroline Kennedy warned senators that her cousin Robert F. Kennedy Jr. is a “predator” ahead of his confirmation hearings to be President Donald Trump’s Department of Health and Human Services secretary and urged them to reject his nomination.

Kennedy, who said she felt an “obligation” to speak out, read aloud her letter she sent to senators detailing troubling behavior from her cousin that she said she witnessed over the years, accusing him of hypocritical views on vaccines while being “addicted to attention and power.”

Recounting one disturbing episode, Kennedy recalled her cousin putting baby chickens and mice in a blender to feed to his birds years ago.

“I watched his younger brothers and cousins and cousins follow him down the path of drug addiction. His basement, his garage, his dorm room were always the center of the action where drugs were available and he enjoyed showing off how he put baby chickens and mice in a blender to feed to his hawks. It was often a perverse scene of despair and violence” Kennedy said.

Although Kennedy acknowledged her cousin has been able to “pull himself out of illness and disease,” she accused him of living a double standard and financially benefitting off of some of his conspiratorial vaccine views.

The former ambassador to Australia said it has not been easy remaining silent during her cousin’s failed presidential campaign but felt obligated to speak out because she feels he has misrepresented the assassinations of John F. Kennedy and Robert F. Kennedy.

In urging the Senate to reject her cousin’s nomination, Kennedy said her father and uncle “would be disgusted” by Kennedy Jr.’s views.