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.

Rivetti’s nearly 30-year career started in Pittsburgh, where he joined a city-based law firm as a litigation associate after receiving his law degree from Georgetown University. He obtained his bachelor’s degree from Dickinson College.

After five years at the law firm, he served as a clerk for federal Judge D. Brooks Smith, currently a senior judge in the U.S. Court of Appeals for the Third Circuit, whose jurisdiction covers Pennsylvania, New Jersey and Delaware.

Rivetti joined the U.S. Attorney’s Office in 1997 and headed the office’s criminal division before becoming First Assistant U.S. Attorney, a post he held from 2021 to 2025.

Rivetti’s focus in recent years has been on the “prosecution of violent crime, including large-scale drug trafficking organizations and firearms offenses.”

Rivetti led the prosecution of the Squirrel Hill synagogue shooter in 2023.

That same year, he arrested 57 people following a yearslong investigation that culminated in law enforcement seizing more than 1,000 pounds of fentanyl-laced faked prescription pills and methamphetamine.

Years earlier, in 2008, a Rivetti-led investigation that included “months of wiretaps” and controlled drug buys ended with a 27-count indictment against dozens of suspects accused of running a large-scale crack and cocaine ring in Pittsburgh’s Mt. Washington, Allentown, Brookline and Beltzhoover neighborhoods.

Rivetti tackled cases both local and national.

Last April, he worked with the FBI to indict a Butler County man accused of plotting to kill President Donald Trump.

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.

“Dadig stalked and harassed more than 10 women by weaponizing modern technology and crossing state lines,” Rivetti said at the time. “We remain committed to working with our law enforcement partners to protect our communities from menacing individuals such as Dadig.”