(CNN) Manhattan prosecutors pursuing a criminal case against former President Donald Trump, his company and its executives have told at least one witness to prepare for grand jury testimony, according to a person familiar with the matter -- a signal that the lengthy investigation is moving into an advanced stage. Prosecutors have also been closely examining the finances of Trump Organization CFO Allen Weisselberg, as well as benefits received from the company by him and his son Barry, a longtime employee of the Trump Organization, CNN has reported. The Washington Post reported Tuesday that the grand jury Vance's office has convened is a special grand jury. This type of grand jury is typically used to hear complex, long-term fraud and corruption cases. A special grand jury sits longer than a standard grand jury -- usually three to six months, versus just one -- and, if needed, the jurors can vote to extend its term even further.

Source: CNN May 26, 2021 20:15 UTC