Aldrich Ames, the former CIA counterintelligence officer whose betrayal of U.S. secrets to the Soviet Union and later Russia ranks among the most devastating espionage cases in American history, has died at the age of 84.
Ames died on Monday at the Federal Correctional Institution in Cumberland, Maryland, where he had been serving a life sentence without the possibility of parole, according to CBS News, the BBC’s U.S. broadcast partner. Prison officials did not immediately comment on the cause of death.
The death closes the chapter on a case that reshaped U.S. intelligence practices and exposed deep vulnerabilities inside the CIA during the final years of the Cold War.
Ames was arrested in February 1994 and formally sentenced on April 28 of that year after pleading guilty to espionage charges. Prosecutors said he sold classified information to the Soviet KGB beginning in 1985 and continued his activities after the collapse of the Soviet Union, working with Russian intelligence for nearly a decade.
According to court records and intelligence officials, Ames compromised more than 100 intelligence operations and revealed the identities of over 30 agents working for the United States and its allies. At least 10 of those intelligence assets were executed as a result, U.S. officials have said.
At sentencing, Ames admitted that financial pressure drove his actions. He told the court he initially received 50,000 dollars for handing over names of CIA and FBI sources inside the Soviet Union.
“To my enduring surprise, the KGB replied that it had set aside for me two million dollars in gratitude for the information,” Ames said in a statement read in court.
Over nine years, he received roughly 2.5 million dollars in total, money that funded an extravagant lifestyle far beyond his government salary.
Despite never earning more than about 70,000 dollars annually, Ames purchased a 540,000 dollar home, drove a Jaguar, and took frequent foreign trips. Investigators later said those unexplained expenses were among the clues that eventually led to his exposure.
Ames joined the CIA in 1962 after dropping out of college, helped by his father, who worked as an agency analyst. His career advanced steadily, and he eventually became head of Soviet counterintelligence, even as colleagues raised concerns about his drinking and past security lapses.
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In 1981, while stationed in Mexico City, Ames met Maria del Rosario Casas Dupuy, a Colombian diplomat and CIA asset who later became his second wife. She was later charged as his accomplice and served five years in prison after a plea agreement.
“It was about the money, and I do not think he ever tried to pretend otherwise,” FBI agent Leslie G. Wiser, who helped lead the investigation, told the BBC’s Witness History programme in 2015.
Ames was arrested on February 21, 1994, following an intense internal mole hunt that had already shaken the CIA. He cooperated with authorities after his arrest, a decision that helped secure a reduced sentence for his wife.
At the time, then CIA Director R. James Woolsey called Ames “a malignant betrayer of his country,” saying agents died because “a murdering traitor wanted a bigger house and a Jaguar.”
The Ames case prompted sweeping changes inside the U.S. intelligence community, including stricter financial monitoring, tighter internal oversight, and reforms aimed at preventing similar breaches.