Robert F Kennedy Jr is reported to be ending his challenge to Joe Biden for the Democratic presidential nomination and run instead as an independent candidate, in a move that could upset the 2024 race for the White House.

Kennedy, 69 and a scion of a famous political dynasty – a son of the former US attorney general and New York senator Robert F Kennedy, and a nephew of the former president John F Kennedy – will announce his run in Pennsylvania on 9 October, according to Mediaite.

“Bobby feels that the Democratic National Committee is changing the rules to exclude his candidacy so an independent run is the only way to go,” the website quoted a “Kennedy campaign insider” as saying.