(CNN) — Hundreds of federal officers descended on a small southeast Georgia community and raided the Hyundai Metaplant – arresting 475 people in the largest sweep yet in the current Trump administration’s immigration crackdown at US worksites .

Previously, federal officials estimated 450 people were apprehended Thursday at the enormous site in Ellabell, about 25 miles west of Savannah, Georgia.

The majority are Korean nationals, said Steven Schrank, a Homeland Security Investigations special agent in charge. Schrank said he did not have a breakdown of the arrestees’ nationalities.

All 475 people taken into custody were illegally in the US, Schrank said. Some crossed into the US illegally; some had visa waivers and were prohibited from working; and some had overstayed their visas, he

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