The company says all other store employees were notified.
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The location is undergoing a deep cleaning and will remain open.
The supermarket chain also announced it is increasing precautions at at least 27 locations, saying it would begin limiting the amount of customers allowed in stores at one time to about 30% of their maximum capacity.
Employees at the Old Bridge, Morristown, Garwood, and Newark locations also tested positive for the virus.