Allison Guerriero, who publicly discussed an 18-month relationship with imprisoned former FBI counterintelligence official Charles McGonigal and later criticized him and the bureau, was found dead at her Boynton Beach home Thursday. Police said they do not suspect foul play, while her family awaits autopsy findings.
By yourNEWS Media Newsroom
Allison Guerriero, 52, a former partner of disgraced ex-FBI counterintelligence official Charles McGonigal, was found dead Thursday evening at her home in Boynton Beach, Florida.
Guerriero had publicly criticized McGonigal and other senior figures in the FBI. Her family confirmed her death in a Facebook post.
The circumstances of her death had not been publicly determined. Her father said the family was awaiting an autopsy report and death certificate. Boynton Beach police said they did not believe foul play was involved.
Guerriero had been unusually active on X earlier Thursday, publishing 75 posts before she was found dead later that night.
Her X biography described her long-running dispute with McGonigal and referenced health problems she said she had experienced.
“I turned in two time convicted traitor, former head of Counterintelligence for FBI, Charles McGonigal. I’ve been sick with illnesses and injuries for 8 years,” Guerriero’s biography read.
Several of her final messages were circulated in an X post documenting her activity and a second social media post.
She also posted a video to social media hours before her death.
According to her father, William Guerriero, the family still did not know what caused her death.
“We really don’t know yet. We’re waiting to get access to the 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,” William Guerriero told The Daily Mail.
“It could have been an accident. She could have slipped. It could have been anything. We’re waiting for the death certificate so we know what happened,” he said.
Boynton Beach police said there was no indication of foul play.
The Daily Mail reported that Guerriero died sometime during the evening of Aug. 27, according to her 80-year-old father.
The outlet reported that Guerriero had maintained a years-long public campaign against McGonigal and other former senior FBI figures. In one of her final videos, she called for greater scrutiny of federal officials and declared, “I hate the FBI.”
Guerriero had previously described an 18-month affair with McGonigal, 58, who later pleaded guilty in separate federal cases and is serving a prison sentence.
The Daily Mail reported that information Guerriero provided helped expose conduct that ultimately became part of the scrutiny surrounding McGonigal, including his work connected to sanctioned Russian oligarch Oleg Deripaska.
Guerriero remained highly critical of McGonigal after his convictions.
In a 2024 interview with the outlet, she said, “He’s a traitor.”
The relationship and her allegations against McGonigal were the subject of previous Daily Mail reporting, and Guerriero also discussed their relationship in an on-camera interview.
WATCH:
She was also described as a close friend of former New York City Mayor Rudy Giuliani and a friend of longtime political operative and Trump adviser Roger Stone. Stone’s connection to Guerriero was highlighted in another X post.
Another social media post circulated after news of her death.
McGonigal had once been one of the FBI’s senior counterintelligence officials.
Before retiring from the bureau in 2018, he served as special agent in charge of counterintelligence in the FBI’s New York field office and “supervised and participated in investigations of Russian oligarchs, including Deripaska,” according to the Justice Department.
He was arrested in 2023 and accused of conspiring with Oleg Deripaska, a Russian oligarch who was subject to U.S. sanctions.
Federal prosecutors charged McGonigal in a five-count indictment with “violating and conspiring to violate the International Emergency Economic Powers Act (‘IEEPA’) and with conspiring to commit money laundering and money laundering.”
McGonigal pleaded guilty in December 2023 to conspiring in connection with Deripaska and received a four-year federal prison sentence in that case. The Daily Mail reported that he is serving a combined six years and six months in federal prison following his convictions.
Federal prosecutors said McGonigal’s conduct was particularly serious because he had previously worked on matters involving Deripaska while serving at the FBI.
U.S. Attorney Damian Williams said at the time: “As alleged, Charles McGonigal, a former high-level FBI official, and Sergey Shestakov, a court interpreter, violated U.S. sanctions by agreeing to provide services to Oleg Deripaska, a sanctioned Russian oligarch. They both previously worked with Deripaska to attempt to have his sanctions removed, and, as public servants, they should have known better. This Office will continue to prosecute those who violate U.S. sanctions enacted in response to Russian belligerence in Ukraine in order to line their own pockets.”
The Justice Department also said: “As alleged, Mr. McGonigal and Mr. Shestakov, both U.S. citizens, acted on behalf of Deripaska and fraudulently used a U.S. entity to obscure their activity in violation of U.S. sanctions. After sanctions are imposed, they must be enforced equally against all U.S. citizens in order to be successful. There are no exceptions for anyone, including a former FBI official like Mr. McGonigal.”
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