Boston Police are investigating a string of cash register robberies at four Boston stores in different neighborhoods over the past week.

In each robbery, police said the suspect pretended to buy something before grabbing the cash register when the clerk opened it and fleeing with the cash inside. Police didn't say how much cash was stolen in each robbery.

No weapons were displayed during any of the robberies.

The suspect or suspects wanted in a string of robberies in Boston. Boston Police Department

In all the robberies, one suspect was described as wearing a black puffy jacket with the hood up, black pants and a black surgical mask.

The cash register robberies happened at stores on River Street and Fairmount Avenue in Hyde Park, Parker Street in Roxbury and Heath Street in Jamaica

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