Robert F. Kennedy Jr.'s former Harvard University classmate has accused him of selling cocaine as a student.
The bombshell claim came from author Kurt Andersen on Friday in scathing column for The Atlantic.
Earlier in the day Kennedy suspended his third party presidential campaign and endorsed Republican nominee Donald Trump.
Andersen claimed as a Harvard student in the 1970s he purchased cocaine from RFK Jr. and his brother Joseph P. Kennedy II for $40 in a dorm room.
'Sometime during my freshman year, I tried cocaine, enjoyed it, and later decided to procure a gram for myself, Andersen said. 'A friend told me about a kid in our class who was selling coke. The dealer was Bobby Kennedy.'
The writer alleged he reached out to RFK Jr. and he told him to come over to his room in the Hurlbut dorm that the nephew of Democratic President John F. Kennedy shared with future journalist Peter Kaplan.
'[RFK Jr.] poured out a line for me to sample, and handed me an inch-and-a-half length of plastic drinking straw. I snorted. We chatted for a minute. I paid him, I believe, $40 in cash,' Andersen said.
'It was a lot of money, the equivalent of $300 today. But cocaine bought from a Kennedy accompanied by a Kennedy brother—the moment of glamour seemed worth it.'
The author claimed he accidently left the dorm with the straw used to sample the product and Kennedy called him demanding he bring it back.
'I walked it back to his room. He didn’t smile or say thanks. It was the last time I ever bought coke from anyone,' he said.
Andersen said he decided to reveal his experience because of RFK Jr.'s endorsement on Trump.
'If [Trump] becomes president as Kennedy is now working to make happen, wants to start executing drug dealers. He said so in a speech as president in 2018,' he said. 'He said it again in 2022 when he announced his current candidacy.'
DailyMail.com reached out to the Kennedy campaign for comment.
The book 'Robert F. Kennedy Jr. and the Dark Side of the Dream' detailed his long history of 'compulsions and addictions' that goes back to his adolescence.
At just 14, he began burying his anger and sadness in marijuana and psychedelics, and soon turned to hard drugs, including heroin.
His first, but not his last, arrest involving drugs came a couple of months after he was expelled from one of his prep schools for drug involvement.
Decades before marijuana became legal in many states across the country, he was arrested on Cape Cod in August 1970 on a charge of marijuana possession, along with the son of JFK's sister, Eunice Kennedy Shriver.
When he was 29, RFK Jr. overdosed on a flight and was found by police carrying heroin. He was charged with heroin possession and required to perform hundreds of hours of community service and stay within the confines of New York State.