Officers were called to the supermarket on Elizabeth Avenue in Somerset just before 1 p.m., Franklin Township police said.
A K-9 officer from the Middlesex County Sheriff's Office also responded to the store to help with the search, and no suspicious packages or items were discovered.
Anyone having information regarding the incident is asked to contact the Franklin Township Police Department at (732)873-5533.
Click here to follow Daily Voice Garfield-Lodi and receive free news updates.