Hundreds of South Korean workers detained in a U.S. immigration raid arrived in Seoul on Friday, ending a weeklong ordeal that has created business uncertainty and strained relations with a key U.S. ally.

More than 300 South Koreans — 307 men and 10 women — were among 475 people detained in the Sept. 4 raid on a Hyundai facility in Georgia by U.S. immigration and other federal officials who said they were investigating allegations of unlawful employment practices.

The Korean Air plane was also carrying 14 employees of South Korean companies from China, Japan and Indonesia, while one of the 317 South Koreans decided to remain in the United States rather than agree to “voluntary departure.”

Dozens of television cameras were set up behind security barriers at Incheon International Airport

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