US prosecutors have charged Donald Trump in connection with attempts to overturn the results of the 2020 election, the second federal indictment brought against the former president in as many months.

Trump was charged with four criminal counts including conspiracy to defraud the US, to obstruct an official proceeding and to threaten individual rights, according to an indictment filed in federal court in Washington on Tuesday.

The Department of Justice’s indictment stems from a probe led by special counsel Jack Smith into alleged meddling in the results of the 2020 election and attempts to stop the certification of Joe Biden’s victory. The probe has focused on the actions of Trump, as well as his allies and supporters, in the lead-up to the January 6 2021 attack on the US Capitol.