Unsolved Heists: 10 Biggest Cash Crimes That Remain a Mystery

People love a good heist, which explains why it’s a favorite trope of Hollywood movies. However, many people don’t know that some of their favorite heist stories actually occurred in real life. From an after-hours art museum robbery to a tunnel under a bank vault, here are 10 mysterious heists from the not-so-distant past.

The Lufthansa Heist at JFK

A Lufthansa airplane is taxiing on an airport runway beside a smaller plane. The scene includes airport buildings in the background with clear skies above and a body of water in the foreground.
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On December 11, 1978, masked robbers invaded the Lufthansa terminal at John F. Kennedy International Airport, held the employees hostage, and emptied the vault. An FBI investigation led to a gangster named James Burke and his crew but failed to charge them with the heist. In the end, the only person to be convicted was airport worker Louis Werner. While the identities of the robbers are known in this case, the real mystery is the fate of the $5 million in cash and $870,000 worth of jewelry taken from the vault.

The Great Train Robbery in 1963

Black and white image of a vintage steam locomotive with the number "47476" on its side. It is pulling a passenger carriage on railway tracks. The background is a clear sky.
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A little after three in the morning on August 8, 1963, in Ledburn, England, a crew of 15 robbers boarded the mail train’s high-value packages carriage and made off with over 2 million British pounds, equivalent to over $3 million today. Authorities worked quickly to identify 14 out of the 15 robbers, ultimately bringing charges to 11 in the end. However, less than a quarter of the haul was recovered. And the identity of the final robber, a post office informant, remains unknown.

Brazil’s Infamous Banco Central Heist

A tall, modern building with dark glass windows and a central concrete structure rises against a clear blue sky with a few white clouds. The building is surrounded by green trees at the base.
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In 2005, a mysterious gardening business sprang up next door to the Banco Central in Fortaleza, Brazil. In reality, the business was a facade hiding a massive digging project. Many months later, a team finally tunneled into Banco Central’s vault and secured a haul amounting to $70 million. Several arrests have been made in the years since the heist, but only a fraction of the money has been recovered.

The Isabella Stewart Gardner Museum

A room with vintage decor features a bronze statue in the foreground, ornate chairs lined up against the wall, and large framed portraits. A candelabra with lit candles hangs on the left wall, illuminating the classic setting.
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On March 18, 1990, workers at the Isabella Stewart Gardner Museum in Boston arrived for their morning shift to find that 13 works of art had been stolen from their frames. In spite of a $10 million reward put forth by the museum, no arrests have been made in the case, and the stolen artwork remains missing to this day.

The Banco Itau Heist in Sao Paolo

Exterior of an Itaú bank branch with a modern design. The entrance features glass doors and the Itaú logo prominently displayed above. A large potted plant sits beside the entrance.
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Just before midnight on August 27, 2011, a group of 12 men disguised as laborers walked into Banco Itau in Sao Paolo, Brazil. Throughout the night, they emptied 170 private deposit boxes, escaping with an estimated $95 million worth of diamonds, gold bars, and other valuables. Authorities have identified some of the robbers involved, but the identities of the other participants and the location of the stolen items are still a mystery.

Northern Bank Heist in Belfast

Brutalist-style bank building on a city street corner, featuring vertical concrete panels. People walk along the sidewalks and traffic lights are visible. A historic building with green domes is partially seen in the background.
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One of the largest bank heists in the U.K. occurred in Belfast, Northern Ireland in 2004 when kidnappers forced two Northern Bank employees to rob their own workplace. Millions of uncirculated bank notes were stolen, so much so that the country immediately redesigned their paper currency and recommended that its citizens exchange their old notes for the new design. A package containing some of the stolen notes was found in a public toilet a few months after the heist, but the overall case is still unsolved.

Dunbar Armored Robbery in L.A.

A red and black armored truck is parked on a city street. The truck displays "Dunbar Armored" and "Safeguarding Valuables" on its side. Buildings, cars, and a street intersection are visible in the background.

On September 12, 1997, masked intruders broke into the Dunbar Armored facility in Los Angeles and made off with $18 million in a rented truck. Due to the efficient nature of the crime, which took less than 30 minutes, authorities suspected that the perpetrators had inside help. Eventually, former Dunbar employee Allen Pace III was implicated, along with his accomplices. However, only $5 million of the total take has been accounted for.

The Antwerp World Diamond Center

A narrow street lined with modern buildings on both sides. People are walking along the sidewalk, and two parked vans are visible. A sign reads "Antwerp World Diamond Centre." The scene is overcast, with a cloudy sky above.
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The Antwerp World Diamond Center in Belgium, home to the world’s largest diamond companies, experienced the “heist of the century” when it was robbed over several days in February 2003. Like a story out of Hollywood, a mastermind named Leonardo Notarbartolo assembled a motley crew to steal an estimated $100 million worth of diamonds and fine jewelry. In the end, only one of Notarbartolo’s accomplices escaped justice, and most of the diamonds are still missing.

The Brink’s-Mat Robbery in London

View of a large airport terminal with a modern glass facade under a clear blue sky. Several airplanes are parked at the gates, with ground vehicles visible near the aircraft.

The Brink’s-Mat Robbery refers to an event that occurred in 1983 when intruders broke into the Brink’s-Mat warehouse in London. They had originally planned to steal a little over $1 million in cash but were surprised to find an additional $30 million worth of gold bars. Ultimately, two out of six perpetrators were convicted, and the stolen gold is assumed to have reentered the market somehow.

The Denver U.S. Mint Robbery

A vintage postcard of the U.S. Mint in Denver, Colorado, shows a two-story, rectangular stone building with arched windows and a hipped roof. A grassy lawn and utility poles are visible in the foreground.
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On December 18, 1922, a trio of men intercepted $200,000 from the Denver Mint as it was being loaded onto a truck. A shoot-out followed, resulting in the death of one of the robbers, Charles Linton. Unfortunately, Linton was the only identified robber until 1934. By then, most of the gang had died of various causes, and the only two surviving members were already in custody for unrelated crimes.

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