Former US President Donald Trump arrives onstage to announce that he will once again run for US president in the 2024 US presidential election, during an event at his Mar-a-Lago estate in Palm Beach, Florida, US, November 15, 2022. (REUTERS/Jonathan Ernst)

The specific charges are not yet known, as the indictment remains under seal. CNN on Thursday reported Trump faces more than 30 counts related to business fraud.

Trump said he was "completely innocent" and indicated he would not drop out of the 2024 presidential race. 

"This is Political Persecution and Election Interference at the highest level in history," he said.

Trump, the frontrunner for the 2024 Republican nomination according to polling, received support from a number of his potential challengers on Thursday including Florida Governor Ron Desantis and former Vice President Mike Pence.