State police say the stabbing occurred yesterday afternoon at a Big Y supermarket in a shopping plaza in Old Lyme and a second person suffered serious injuries.
Police say they responded to the supermarket on a report of an assault. They say the two people were known to each other and the stabbing was not a random act.
The injured person has been taken by helicopter to a hospital.
The identities of the two people haven't been released.
The Springfield, Massachusetts-based Big Y supermarket chain has several locations in Massachusetts and Connecticut. Its divisions include Fresh Acres Market and Table & Vine fine wines and spirits.
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