The US Federal Bureau of Investigation released the footage, taken by surveillance cameras just 24 hours before the painting’s disappearance on March 18, 1990.
Abath, now 48, denied the allegations of his possible involvement in the robbery, though he admitted to breaking museum rules by opening the door to strangers at night. He noted the men appeared to be police.
“They had hats, badges, they looked like cops, and I let them in. They said, 'Are you here alone?' And I said, 'I have a partner that's out on a round.' They said, 'Call him down.' And they said, 'Gentlemen this is a robbery,” Abath told WBUR.
"I was just this hippie guy who wasn't hurting anything, wasn't on anybody's radar and the next day I was on everybody's radar for the largest art heist in history," the former guard told NPR earlier this year.
“By releasing this video, we hope to generate meaningful leads and ultimately recover the stolen artwork,” Vincent Lisi, the special agent in charge of the FBI in Boston, said in a public statement.
The heist involved thirteen works from world-acclaimed artists like Johannes Vermeer, Edgar Degas, Édouard Manet and Rembrandt Harmenszoon van Rijn, whose combined price approaches $500 million.
���� Rembrandt van Rijn 1606-1669 ���� The Storm On The Sea Of Galilee 1633 Isabella Stewart Gardner Museum ���� Boston, MA pic.twitter.com/ElVv55SGQB— Eliana (@Elianasp2425) 28 июля 2015
Some of the works – such as Rembrandt’s the Storm on the Sea of Galilee and Vermeer’s The Concert — are more than 5 feet tall, raising the question of how they could be transported without notice, the Guardian reported.
“We remain committed to one goal: the return of all 13 works to their rightful place, which is here at the Isabella Stewart Gardner Museum,” Security Director Anthony Amore said. “To that end, we support the efforts that the United States Attorney and the Federal Bureau of Investigation are making to uncover any and all information related to the theft of our artwork. We believe that no stone should be left unturned.”
The Gardner Museum theft is considered by experts to be the largest private property theft in art history.
Since the robbery, the museum has left the works’ frames hanging empty in order to show their original positions.