Melania Trump has threatened to sue Hunter Biden for $1 billion unless he retracts claims about the First Lady’s alleged connections to Jeffrey Epstein, according to a report.

Lawyers for Mrs Trump sent Mr Biden a letter accusing the former president’s son of making “false, defamatory, disparaging, and inflammatory statements” about her, Fox News reported.

The letter is said to have demanded Mr Biden immediately remove the comments and issue an apology or face legal action.

The letter, sent on August 6 by the First Lady’s attorney, Alejandro Brito, to Mr Biden’s lawyer, Abbe Lowell, referred to comments the former president’s son made in an interview.

Speaking to Channel 5 with Andrew Callaghan, Mr Biden claimed that the paedophile financier introduced Mrs Trump to her future husband.