Nearly 25 masked, hooded individuals were caught on video descending upon a jewelry store in broad daylight this week in San Ramon, California, and stealing an estimated $1 million in merchandise, KGO-TV reported .

Police said the suspects — armed with crowbars and pickaxes and at least three guns — smashed display cases and grabbed whatever they could get their hands on during Monday afternoon's heist at Heller Jewelers, the station said.

'This is not their first time doing something like this.'

"When they went in, they basically took over the store," Lt. Mike Pistello of the San Ramon Police Department told KGO. "Basically taking whatever jewelry was available."

More from the station:

Cellphone video captured the suspects locked inside the store at one point. Police say at least

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