(Luis Cornelio, Headline USA) The woman who had an affair with a disgraced former top FBI official and blew the whistle on his ties to Russia was mysteriously found dead just hours after sounding the alarm about potential corruption within the bureau.
Allison Guerriero was reportedly found dead inside her home in Florida, according to several news reports. She was 52 and most recently worked as a researcher for Roger Stone.
Guerriero gained national attention in 2019 after she reached out to the FBI’s New York Field Office to blow the whistle on then-FBI counterintelligence chief Charles McGonigal, his finances and ties to Russian oligarch Oleg Deripaska.
Guerriero is credited with being a major source who helped expose McGonigal’s misconduct, which ultimately helped lead to his criminal prosecution and imprisonment.
Guerriero had a romantic affair with McGonigal after meeting him while she worked as a security contractor and began interacting with law enforcement officials.
During her 18-month affair, Guerriero noticed McGonigal had suspicious connections with a Russian contact. She said she once saw a plastic bag full of cash inside his Brooklyn apartment. Separately, she revealed to the media that she once saw him holding a bag filled with cash and envelopes tied to foreign individuals.
Guerriero had recently moved to Boynton Beach, Florida, according to her obituary.
Her death came just hours after she implied that there were additional corrupt individuals within the FBI.
In a video posted on X Aug. 27, Guerriero specifically said, “Here’s the problem with Charles McGonigal. You know his name, but you never did before that. You knew Jim Comey’s name. You knew Chris Wray’s name. All the names that you already know, you know. Why don’t you start looking for the names that you do not know?”
Now THIS the exhale after praying rosaries every day, Saint Jude Novena’s, embarrassing myself, and humiliating myself on social media, so people will pay attention to me, and somebody will start paying attention to all the names you do not know and never heard regarding the… pic.twitter.com/4wUeFRPwMM
— Allison Guerriero (@AllisonGuerrier) August 27, 2026
McGonigal was not a random FBI agent. He previously led the bureau’s counterintelligence division in New York and oversaw investigations involving Russian intelligence and alleged Russian meddling in the 2016 presidential election. He was also the head of the probe into the conspiratorial claim of collusion between President Donald Trump and the Russian government.
His high-ranking post came to an end after the FBI began looking into his finances, ultimately leading to federal criminal charges related to money laundering and other offenses.
He pleaded guilty in a New York federal case to one count of conspiracy to violate the International Emergency Economic Powers Act and commit money laundering.
Specifically, McGonigal admitted that he accepted money from Deripaska to investigate Deripaska’s rival in a bid to have the rival placed on a U.S. sanctions list. He was sentenced to 50 months in prison and ordered to pay a $40,000 fine.
The disgraced former FBI official also pleaded guilty in D.C. federal court to one count of concealment of material facts. In that case, his guilty plea pertained to his efforts to conceal his relationship with and cash payment from an Albanian intelligence official and businessman. He was sentenced to 28 months in that case.
Guerriero’s cause of death has not been revealed by the Boynton Beach Police Department. Headline USA unsuccessfully reached out to the BPD on Wednesday evening.
Newsweek reported that the medical examiner is looking into her death, though a police spokesperson said that “there do not appear to be any signs of foul play at this time.”
Her father told the Daily Mail they are awaiting an autopsy report. “I believe they’re going to issue a death certificate within the next day so we can get her home and have her put to rest,” he said.
Roger Stone told the Mail that he last heard from Guerriero a day before her death. She had reached out via text on research-related matters.
“Allison was a brilliant researcher and writer with an excellent knowledge of both law enforcement and our intelligence capabilities and a wide network of contacts. She was widely respected in that world,” Stone added.
