Customers made the discovery after purchasing Kerrygold Pure Irish Butter from Best market in Holmdel last month.
Police Lt. Keith Cannata tells the Asbury Park Press 22-year-old Nicholas Mignosi of Keansburg is charged with tampering with a food product. He's been suspended from his job with Best Market.
There were no reports of any injuries.
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Information from: Asbury Park (N.J.) Press, http://www.app.com
