Smash and Grab Jewelry Heists Caught on Video

Brazen thieves target stores selling luxurious items in daring daytime robberies.
1:59 | 12/20/14

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Transcript for Smash and Grab Jewelry Heists Caught on Video
All right, taking a turn now to the caught on surveillance camera smash and grab robberies. Thieves busting up jewelry stores. These types of robberies are happening a lot before the holidays. Mara schiavocampo has the incredible video. Reporter: Shoppers aren't the only ones hitting up jewelry store this is holiday season. The boldest of bars. In Florida, this masked gunman terrorizing. The guy meant business. Didn't hesitate for a he could. Reporter: Holding him at gunpoint before nabbing $400,000 worth of diamonds and gold in five minutes. I said I'm going to cooperate, not going to do anything. Reporter: Authorities call them smash and grab thieves. They are targeting stores all over the country. And two masked men in Brooklyn, one pointing a gun at employees while the other uses a hammer to shatter display cases. Stuffing the back with $250,000 in luxury loot. A possible female accomplice wanted for questioning. She holds the door open. A trio of thieves robbed this Raleigh, North Carolina, store in broad daylight. They had Rolexs. Reporter: In and out in ten minutes. They were pushing people out of the way. Reporter: But some holiday heists are escalating a violent tactic. A rash of assaults in Chicago police are calling kpracrash and grabs. Using cars. Smashing windows, piling in one after another to snatch up tens of thousands in merchandise. Gone in just 90 seconds. Leaving behind little more than a trail of destruction. Now officials say the most important thing for store owners, high-quality surveillance cameras at eye level to identify those brazen thieves. This is clearly something they don't know how to tackle or handle this morning. Thank you to you.

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

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