CATO, N.Y. — Federal agents forced open the doors of a snack bar manufacturer and took away dozens of workers in a surprise enforcement action that the plant's co-owner called “terrifying.”

Video and photos taken at the Nutrition Bar Confectioners plant Thursday showed numerous law enforcement vehicles outside the plant and workers being escorted from the building to a Border Patrol van. Immigration agents ordered everyone to a lunchroom, where they asked for proof the workers were in the country legally, according to one 24-year-old worker who was briefly detained.

The reason for the enforcement action was unclear. Local law enforcement officials said the operation was led by U.S. Homeland Security Investigations, which did not respond to requests for information. Nutrition Bar Confecti

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