A prosecutor who helped convict the gunman now on death row for fatally shooting 11 congregants in a Squirrel Hill synagogue in 2018 is officially at the helm of the U.S. Attorney’s Office in Pittsburgh. U.S. Attorney General Pamela Bondi has appointed longtime prosecutor Troy Rivetti as U.S. Attorney for the Western District of Pennsylvania, overseeing federal prosecutors with offices in Pittsburgh, Erie and Johnstown, the U.S. Attorney’s Office announced Thursday. Rivetti has led the office since Eric Olshan stepped down from the role in January 2025. A federal judge swore in Rivetti on Wednesday. Last month, he helmed the investigation that led a federal grand jury to indict a Whitehall man — Brett Michael Dadig, 31 — on charges of cyberstalking.