Allison Guerriero, a security researcher whose information helped expose the criminal conduct of former FBI counterintelligence official Charles McGonigal, has been found dead at her home in Boynton Beach, Florida. Hours before her death, Guerriero posted a series of messages on X, formerly Twitter, criticizing Representative Jim Jordan, the FBI and McGonigal. McGonigal was arrested in 2023 and was sentenced to 50 months in prison and then was later sentenced in a separate case to 28 months in prison in 2024.
He pleaded guilty to secretly colluding with a Russian oligarch and also admitted to receiving $225,000 in cash from someone with ties to the Albanian government. "I committed a felony and as a former FBI special agent it causes me extreme emotional and physical pain," McGonigal told the judge before he was sentenced. "I stand before you today with a deep sense of remorse." It's unclear what caused her death, and authorities are waiting on a report from the medical examiner.
Newsweek reached out to the Boynton Beach, Florida, police department for comment via email but did not receive a response in time for publication. Guerriero was a security researcher who became publicly known after providing information to federal authorities about her former romantic partner, McGonigal, a longtime FBI official who once led the bureau's counterintelligence division in New York. Guerriero alerted investigators after becoming concerned about McGonigal's behavior, including allegations that he was carrying large amounts of cash and maintaining unusual relationships with foreign-connected individuals.
When she asked McGonigal about the cash, he reportedly told her that he won a bet on a baseball game. At the time, he was married with two children. "Charlie McGonigal knew everybody in the national security and law-enforcement world," Guerriero said in an interview with Business Insider.
So why should I feel bad that he was able to deceive me?" Her tip reportedly helped launch a broader federal investigation into McGonigal's activities. Guerriero had been involved in an approximately 18-month relationship with McGonigal. After the relationship ended, she became increasingly vocal about his conduct and the FBI's handling of the case.
She frequently posted on social media and gave interviews discussing the scandal and calling for greater scrutiny of senior law enforcement officials. Her information helped investigators uncover details about McGonigal's connections to foreign figures and contributed to the investigation that eventually resulted in his arrest and conviction. In the years that followed, Guerriero remained outspoken about the case and argued that some aspects of the scandal had not received sufficient public attention.
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