Allison Guerriero, who exposed FBI agent's ties to Deripaska, found dead in Florida

September 4, 2026 at 02:23 PM2 min

This digest was compiled by AI from multiple sources — links to the originals are below.

Allison Guerriero, the woman who exposed former FBI counterintelligence chief Charles McGonigal's ties to Russian oligarch Oleg Deripaska, has died in Florida under unclear circumstances. Police have not disclosed the cause of death. Guerriero had recently hinted on social media that new names could emerge in the case.

Key Facts

Allison Guerriero died in Florida under unclear circumstances, and police have not released the cause of death.
Guerriero exposed Charles McGonigal, former head of FBI counterintelligence in New York, after noticing him carrying bundles of cash in 2017.
McGonigal pleaded guilty in 2023 to secretly working for Russian oligarch Oleg Deripaska to help him evade U.S. sanctions.
Shortly before her death, Guerriero hinted on X that new high-profile names could soon emerge in the case.
In recent years, Guerriero worked with Roger Stone, a former adviser to Donald Trump.

Death in Florida

Allison Guerriero died in Florida under circumstances that remain unclear, according to Bild. Police have not disclosed the cause of death. Guerriero was at the center of one of the most high-profile scandals in U.S. counterintelligence history. State law enforcement agencies have declined to comment on the incident.

The McGonigal Investigation

Guerriero gained prominence after exposing her former lover Charles McGonigal, the former head of FBI counterintelligence in New York. In 2017, she noticed that the senior agent was carrying bundles of cash and maintaining questionable foreign contacts. Her report led to a large-scale investigation that revealed McGonigal had secretly worked for Russian oligarch Oleg Deripaska, helping him circumvent U.S. sanctions. McGonigal pleaded guilty in 2023 and was sentenced to prison.

Recent Activity and Hints

Guerriero claimed that many more influential figures were involved in the scandal. Shortly before her death, she hinted on X that new high-profile names could soon surface in the case. In recent years, she worked alongside Roger Stone, a former adviser to Donald Trump.