A jewelry store in the Bay Area was hit Monday night by nine masked thieves who smashed showcases with hammers, surveillance videos show.
The robbery took place around 7.30pm in the Iceberg Diamonds jewelry store inside the Sun Valley Mall in Concord.
The Concord Police Department released seven-second surveillance footage.
The oncoming robbers can be seen entering the store and swinging hammers at the front showcases, which contained rows of jewelry. The glass shatters into fragments and the thieves reach in to steal objects.
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Police said store employees tried to intervene and were detained by the “hammer-wielding criminals”. The thieves had gone when the police arrived.
Customers thought they had heard shots, but the noise was actually the sound of robbers’ glass breaking glass, police said.
The Concord Police Department told Fox News it is warning other law enforcement agencies in the area to see if Monday night’s robbery resembles other crimes.
Iceberg Diamond’s jewelry store was not available for comment.
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The case is being investigated by Concord Police Department Detectives. Authorities are asking anyone with information relevant to the case to contact Detective Christine Corey at 925-603-5828.
Concord is about 30 miles east of San Francisco.
Monday night’s theft comes amid a wave of thefts and robberies in the Bay Area. In San Francisco, more than 150 families have hired private security guards to patrol their streets amid cheeky property crimes.
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Pr. By October 31, San Francisco police had received reports of 810 burglaries or attempted burglaries this year in the Mission District Police Station’s jurisdiction – an increase of 13% from the same time the following year, according to the San Francisco Chronicle.
Fox News’ Cortney O’Brien and Emma Colton contributed to this report.