(The Hill) – Billionaire Elon Musk alleged that President Trump has ties to convicted sex offender and financier Jeffrey Epstein on Thursday as the part of his growing feud with the president, a fight that boiled over and turned personal on Thursday.

“Time to drop the really big bomb,” Musk wrote on X, the social platform he owns. “[Trump] is in the Epstein files. That is the real reason they have not been made public.”

Names of powerful people previously associated with Epstein — who died by suicide in a Manhattan jail in 2019 — including Trump, Prince Andrew and former President Clinton, have been mentioned in court documents related to Epstein’s decades of sexual abuse.

Trump, before he was elected last November, said he would have “no problem” releasing files relates to Epstein, something some lawmakers and many on social media have called for after Epstein’s death.

The president last year denied any connection to Epstein, writing on social media, “I was never on Epstein’s Plane, or at his ‘stupid’ Island. Strong Laws ought to be developed against A.I. It will be a big and very dangerous problem in the future!”

The White House did not immediately respond to a request for comment.

Musk’s allegation came just minutes after Trump threatened to cancel government contracts with Musk’s companies, calling him “crazy” and escalating an explosive feud between the two former allies.

Musk, one of the richest people on earth who was granted extraordinary access to Trump’s government after he was elected, has criticized the “big, beautiful” spending bill Trump is trying to push through Congress.

The billionaire tech and media mogul suggested earlier on Thursday that Trump would not have gotten elected last fall without him and called him ungrateful.