A report published on Monday revealed what former U.S. Attorney for the Eastern District of Virginia Jessica Aber, 43, who was found dead over the weekend, had been investigating and prosecuting.

According to the New York Post, Aber “had been in charge of some of the biggest cases targeting leaks in the CIA and Russian nationals carrying out fraud in America.”

Authorities are investigating Aber’s cause of death, other reports noted. She was found unresponsive at her home by Alexandria police just before 9:20 a.m. on Saturday.

Before stepping down in January following President Donald Trump’s inauguration, the Biden-nominated attorney secured one of her most high-profile courtroom victories when former CIA analyst Asif Rahman, 34, pleaded guilty to leaking top-secret documents detailing Israel’s plan to strike Iran last year.

The high-profile case involved Rahman posting classified documents on Telegram that revealed details of Israel’s planned October strike, ultimately forcing the Israeli government to delay its retaliatory attack on Tehran.

Aber shredded Rahman’s actions as a “violation of his oath, his responsibility, and the law,” as she said the leak “placed lives at risk, undermined U.S. foreign relations, and compromised our ability to collect vital intelligence in the future.”