PLEASANTON, Calif. - Two sledgehammer-wielding thieves smashed a jewelry store display case and swiped more than $200,000 in engagement rings and diamonds in a brazen midday mall heist, police said.
The duo stormed the Zales jewelry store at the Stoneridge Mall in Pleasanton wearing black hats, heavy coats and gloves Monday morning and made off with the loot in less than a minute, Pleasanton police Detective Pat Walsh said Tuesday.
They threatened to shoot a mall security guard who chased them, but no firearm was seen, Walsh said. The men escaped in a maroon 1990s GMC Yukon.
A surveillance video captured the heist, but police did not immediately identify any suspects or make any arrests.
Investigators believe the same men are behind four similar robberies since mid-March, Walsh said.
A sledgehammer has been used in jewelry heists at stores in Davis, Stockton, Burlingame and San Francisco, he said.
"Based on their m.o. and the apparent pattern, it looks like they're very good at what they do," he said.