Aldrich Hazen Ames, a former senior counterintelligence officer of the Central Intelligence Agency and one of the most destructive spies in United States history, has died at the age of 84 while serving a life sentence without parole in a federal prison.

According to US prison authorities, Ames died on January 5 at the Federal Correctional Institution Cumberland, where he had been incarcerated since 1994. No official cause of death has been disclosed so far.

Arrest and conviction for espionage

Ames was arrested by the Federal Bureau of Investigation in February 1994 after a long-running investigation revealed that he had been spying for the Soviet Union and later Russia. He subsequently pleaded guilty to espionage, admitting that he betrayed the United States for nearly a decade.

US officials have described his actions as catastrophic, stating that his disclosures gravely damaged CIA operations during the final years of the Cold War.

Career inside the CIA

Born in River Falls, Wisconsin, in 1941, Aldrich Ames was the son of a CIA officer and joined the agency in the early 1960s. Over a 31-year career, he specialised in Soviet and Russian intelligence and rose to senior positions.

In 1983, he became chief of the counterintelligence branch of the CIA’s Soviet division, a role that gave him access to the identities of US and allied intelligence sources operating inside the Soviet Union.

Betrayal and scale of damage

In April 1985, Ames secretly contacted KGB officers at the Soviet Embassy in Washington, DC, offering classified intelligence in exchange for money. He later admitted that financial motives and fear of exposure drove his actions.

Ames handed over hundreds of classified documents, exposing covert operations across Russia, Europe and Latin America. At least 10 Soviet and Eastern Bloc intelligence sources were executed as a direct result of his betrayal, while many others were imprisoned. The CIA’s spy network within the Soviet Union effectively collapsed.

The KGB and later Russian intelligence paid Ames at least $2.7 million, funds he used to buy luxury cars and an expensive home, warning signs that went undetected for years.

Sentencing and legacy

Ames was sentenced to life imprisonment without parole. His wife, Rosario Ames, received a five-year sentence for assisting him. Until his death, Ames remained a symbol of institutional failure and is widely regarded as the most damaging traitor in CIA history.