John Durham announced his resignation as the U.S. attorney for Connecticut but remains a special counsel as he reviews the origins of the Russia investigation.

“My career has been as fulfilling as I could ever have imagined when I graduated from law school way back in 1975. Much of that fulfillment has come from all the people with whom I’ve been blessed to share this workplace, and in our partner law enforcement agencies,” Durham said Friday. “My love and respect for this Office and the vitally important work done here have never diminished. It has been a tremendous honor to serve as U.S. Attorney, and as a career prosecutor before that, and I will sorely miss it.”