For the past 25 years, former night security guard Richard Abath has publicly maintained his innocence in the largest art heist in history. But investigators say a newly discovered video suggests Abath might know more about the robbery than he has let on.

On March 18, 1990, Abath was a 23-year-old working the night shift at Boston’s esteemed Isabella Stewart Gardner Museum when, he said, two men posing as police officers tricked him into opening a side door. Eighty-one minutes later, the thieves had stolen more than half a billion dollars worth of artwork from the museum.

It has been twenty five years since the biggest art theft in history was pulled off at the Isabella Stewart Gardner Museum in Boston.

On Thursday, the U.S. Attorney’s Office released a newly discovered video taken the night before the heist, and is asking the public to help identify one of the two individuals captured in the footage.

The six-minute video, shows an unidentified man enter the museum at 12:49 a.m. on March 17, 1990. At almost exactly the same time on March 18, thieves dressed as Boston Police officers entered the same door, handcuffed two museum guards, and left with 13 pieces of art now valued at over $500 million, according to law enforcement officials. The museum has since offered a $5 million reward for information leading to the return of the stolen art.

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25 Years After Gardner Museum Heist, Video Raises Questions

New York Times – ‎10 hours ago‎

BOSTON — In 1990, Richard Abath was a 23-year-old self-described hippie and guitarist for a rock band named Ukiah who, while moonlighting as a security guard, allowed two thieves posing as police officers to enter the Isabella Stewart Gardner Museum …

Video Shows Security Guard Letting a Man Into Isabella Stewart Gardner Museum …

WGBH NEWS – ‎Aug 6, 2015‎

The low-resolution security-camera video shows a security guard allowing a man to enter the Mission Hill museum’s rear entrance — against museum policy — at 12:49 a.m. on March 17, 1990, the day before the infamous theft. About 24 hours later, the …

Surveillance Footage Focuses Interest on Security Guard in 1990 Boston Art Heist

WNPR News – ‎Aug 6, 2015‎

An empty frame marks where a Rembrandt once hung in the Isabella Stewart Gardner Museum in Boston. FBI. More than 25 years ago, one of the most infamous art heists in history occurred at the Isabella Stewart Gardner Museum in Boston, Massachusetts.

Dry run? Security film may show art thieves rehearsing legendary $500M heist

Fox News – ‎21 hours ago‎

Federal agents probing the notorious 1990 heist at Boston’s Isabella Stewart Gardner Museum released surveillance video Thursday that may show a “dry run,” with a security guard improperly letting a grainy figure in through the same door crooks used a …

New Gardner Museum Art Heist Video Released By FBI

CBS Local – ‎Aug 6, 2015‎

BOSTON (CBS) — The FBI released never-before-seen surveillance footage related to the Isabella Stewart Gardner Museum heist on Thursday, which shows a security guard letting in an unauthorized visitor 24 hours before priceless works of art were stolen.

Video to solve 25-year-old Boston art heist mystery

Eyewitness News – ‎12 hours ago‎

BOSTON – Federal investigators in Boston on Thursday released 25-year-old surveillance video showing a security guard admitting a man to the Isabella Stewart Gardner Museum the night before it was robbed of $500 million worth of art in the largest such …

Gardner Museum guard wrote thesis on art heist

Boston Globe – ‎15 hours ago‎

Abath was a 23-year-old Berklee College of Music dropout and a member of a struggling rock band at the time of the heist, and he was moonlighting as a security guard. He has admitted that, at that time in his life, he regularly drank alcohol and smoked …

New video released in infamous 1990 Boston art heist

CBS News – ‎Aug 6, 2015‎

The video shows a security guard letting in an unauthorized visitor almost exactly 24 hours before the works of art were taken from the Isabella Stewart Gardner museum, according to the FBI, and investigators are hoping the public can help identify the …

New video seems to show guard let in man day before Gardner heist

Boston Globe – ‎Aug 6, 2015‎

The newly discovered video refocuses the spotlight on Richard Abath, the rock musician who had been moonlighting as a security guard. Authorities did not identify Abath as the guard, though the Globe has learned it is him. Officials released the video …

Video once again puts spotlight on guard in Gardner case

Boston Globe – ‎Aug 6, 2015‎

A then-23-year-old Berklee College of Music dropout and a member of a struggling rock band, Abath was moonlighting as a security guard. He has admitted that, at that time in his life, he regularly drank alcohol and smoked pot and also sometimes took …

New Gardner museum video may show thieves 24 hours before art heist

The Guardian – ‎Aug 6, 2015‎

The key to the Isabella Stewart Gardner Museum robbery may lie with one of the museum’s security guards. Rick Abath, the guard on duty during the 1990 heist, was famously found bound with duct tape after the thieves – according to Abath – tricked him …

New video on major Boston art heist released as author appears in Portland

Press Herald – ‎11 hours ago‎

Though the surveillance video, which was released by the U.S. Attorney’s Office in Boston on Thursday, does not show the person’s face, it seems to prove that the same security guard who claims he mistakenly let the thieves into the museum at 1:24 a.m. …

Video released in hopes of solving 25-year-old $500 million art heist

wtkr.com – ‎7 hours ago‎

Another camera captures a museum security guard speaking to what appears to be the same man. The car is then seen driving away. The footage, captured by the museum just 24 hours before the sensational heist, was released for the first time Thursday by …

Authorities Release New Footage Of Night Before Gardner Art Heist

WBUR – ‎Aug 6, 2015‎

The newly released video appears to put renewed focus on Rick Abath, the Gardner security guard who let in the thieves the night of the robbery — though Thursday’s statement did not identify the security guardwho let in the “unauthorized visitor” the …

New video may shed light on unsolved $500 million art heist

Mashable – ‎Aug 6, 2015‎

The heist itself took place in the early hours of March 18, 1990, when two men dressed in Boston Police uniforms entered the museum by telling the security guard at the watch desk that they were responding to a report of a disturbance within the …

Gardner Museum Heist Video Released 25 Years On

Yahoo News UK – ‎10 hours ago‎

The new footage, captured by museum CCTV, shows a security guard appearing to hit an intercom button to grant access to a man who can be seen in the museum’s reception area at about 12:49 am on 17 March 1990 – almost exactly 24 hours before the …

FBI Releases New Clues About 25-Year-Old Museum Heist

TIME – ‎7 hours ago‎

The men, who have never been caught, handcuffed a pair of security guards and wrapped their heads in duct tape before stealing the art, according to the Washington Post. The new video footage, however, is actually from the night before the theft. It …

Who is this man? Grainy footage could solve $500m art heist

Boing Boing – ‎12 hours ago‎

The video’s mystery man, seen being given midnight rear-entry access to the Museum by a security guard on March 17, 1990, appears to be in his 60s. A day later, two men wearing police uniformes were admitted in the early hours of the morning.

FBI releases historic footage connected to Gardner Museum burglary, asks for …

FOX CT – ‎Aug 6, 2015‎

The video also shows an unidentified man exiting the automobile and then being allowed inside the Museum, against Museum policy, by a security guard. That event occurred at 12:49 p.m. on March 17, 1990, almost exactly 24 hours before the thieves …

New video released in effort to solve 25-year-old mystery

WMUR Manchester – ‎21 hours ago‎

The video also shows an unidentified man being allowed inside the museum, against museum policy, by a security guard the day before the theft. Nobody has been charged in the Gardner heist, in which two men posing as police officers stole 13 pieces of …

Boston Download: Video Could Hold Answers to Notorious Gardner Museum Heist

BostInno – ‎7 hours ago‎

The FBI released surveillance footage on Thursday, August 6, that could hold answers to one of the most notirious art heists in history. The video was taken just days before the 1990 theft of priceless works of art from the Isabella Stewart Gardner …

FBI hopes grainy CCTV video will help solve 25-year-old $500m art heist

International Business Times, India Edition – ‎11 hours ago‎

Federal investigators in Boston released 25-year-old surveillance video showing a security guard letting a man into the Isabella Stewart Gardner Museum, the night before it was robbed of $500m (£322m) worth of art in the largest such heist in US history.