PASCO COUNTY, Fla. — The Pasco County Sheriff's Office is searching for a thief who smashed his way to a big score at a jewelry store over the weekend.

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Detectives said the crook whipped out a sledgehammer inside Helzberg Diamonds at the Tampa Premium Outlet Mall on Sunday evening and smashed a glass display case.

He then grabbed several Rolex watches, tossed them into a plastic bag, and took off. Investigators haven't said how much the stolen merchandise is worth.

If you know who the thief is, call the Pasco County Sheriff's Office at 1-800-706-2488.