“On May 13, 2019, I directed United States Attorney John Durham to conduct a preliminary review into certain matters related to the 2016 presidential election campaigns, and Mr. Durham’s review subsequently developed into a criminal investigation, which remains ongoing. Following consultation with Mr. Durham, I have determined that, in light of the extraordinary circumstances relating to these matters, the public interest warrants Mr. Durham continuing this investigation pursuant to the powers and independence afforded by the Special Counsel regulations,” Barr said in the appointment order, which was dated Oct. 19, 2020.
https://www.washingtonexaminer.com/news/barr-appoints-john-durham-as-special-counsel-to-investigate-further-criminality-in-russia-inquiry