The death of Allison Guerriero, 52, the former mistress of disgraced FBI counterintelligence chief Charles McGonigal, has been ruled a suicide, a source close to the investigation told the Daily Mail. Guerriero was found dead in her Boynton Beach, Florida, apartment on August 27, leading to speculation about the circumstances of her passing.
The Palm Beach County Medical Examiner's office denied a request for the autopsy report, citing a Florida law that exempts suicide victim reports from public records to protect family privacy.
Guerriero's life and actions, particularly her involvement with McGonigal, had recently come under scrutiny following a critical article published by security consultant Jackie Singh on the website Hacking, but Legal. Singh noted that Guerriero had been in contact with her before the article's publication, and in a text message on the day of her death, Guerriero wrote, "I don't wanna wreck your life like they did to me."
Despite the official ruling, friends and family members expressed disbelief that Guerriero would take her own life. Her father, Bill, stated he had not seen the autopsy results and wished to know what they said. Roger Stone, a conservative lobbyist and ally of President Trump who had hired a private investigator to look into Guerriero's death, shared similar sentiments. "Based on my communications with her on the day before and the day of her passing and her devout Catholicism I still have a hard time believing that she took her own life," Stone said.
Prior to her death, Guerriero had shared a series of posts on X, formerly Twitter, including a video of herself walking and stating, "I hate the FBI." She also made claims about fears of Russian reprisals, noting her role in exposing McGonigal's work for Russian oligarch Oleg Deripaska, who has ties to Vladimir Putin. In text messages with an independent researcher named Anthony Gonzales, Guerriero expressed concerns about surveillance, stating, "As if I don't have the same concerns? I turned in a traitor working for the Russians."
Guerriero's affair with McGonigal, which began in 2017, became instrumental in uncovering his crimes. McGonigal, who was the special agent in charge of the FBI's New York counterintelligence division, was eventually sentenced to 6.5 years in prison for secretly working for Deripaska.
Guerriero, a former vice president of US operations for an Israeli security firm, met McGonigal in 2017. She later alerted the FBI in 2019 about her suspicions regarding McGonigal's activities after discovering a bag containing $80,000 in cash in their shared apartment, which McGonigal attributed to a baseball bet. Their relationship ended on Christmas Eve 2018, after McGonigal confessed he was not divorcing his wife.