Armed Gunmen Pull Jewelry Heist in Manhattan's Diamond District

Massive manhunt begins after the criminals escape from the brazen jewelry heist.
1:55 | 11/12/14

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Transcript for Armed Gunmen Pull Jewelry Heist in Manhattan's Diamond District
And the bold robbery in Manhattan. A jewelry store robbery, but the criminals escaped. Tom I can't mass has the story. Reporter: This is one of the jewelry capitals of the world. $24 billion in sales every year. That robbery happened just behind me. One of the crooks dressed as a delivery man. But happened on the eighth floor. How did they get away? One working theory, jumped rooftop to rooftop in a batman-like escape. A brazen heist in broad daylight in New York's diamond district. Male robbed at gunpoint. Reporter: Two heavily-armed men storm into this building with a watch store on the eighth floor. One is outside, the other holds several employees at gunpoint. On a crowded block at 2:00 P.M. Weapons used is two handguns and a machine gun. Reporter: With a veterans day parade taking place a block away, demanding the employees to open the safe. But loading up the backpack, the store's owner arrived at work. They were yelling at him to call police. The suspect hit him in the head with the firearm. Reporter: The office workers were sealed in their offices. Cops and k-9 units chased down leads on rooftops. They are at large. But if you're going to rob one of the busiest and heavily-monitored places in the world, shouldn't expect to be free for long. It's unclear how much was stolen. But there are reports it was in the millions. They are still at large. Right not middle. There was a parade downtown. It was crawling with cops. Just incredible. Thank you. Turning now to the Navy

This transcript has been automatically generated and may not be 100% accurate.

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