By HYUNG-JIN KIM and KIM TONG-HYUNG, Associated Press

SEOUL, South Korea (AP) — South Korea’s foreign minister departed for the U.S. on Monday to finalize steps for the return of several hundred South Korean workers detained last week in a massive immigration raid in Georgia, as the incident caused confusion, shock and a sense of betrayal among many in the U.S.-allied nation.

The Sept. 4 raid on a battery factory under construction at a sprawling Hyundai auto plant in Georgia led to the detainment of 475 workers, more than 300 them South Koreans. Some of them were shown being shackled around their hands, ankles and waists in video released by U.S. Immigration and Customs Enforcement.

South Korea announced Sunday the U.S. agreed to release the detained workers, saying it would send

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