A senior U.S. state department official on Sunday expressed regrets over the recent mass detention of South Korean workers in America and vowed to prevent similar occurrences.

Axar.az informs, citing Yonhap, Christopher Landau, deputy secretary of state, visited Seoul for a meeting with South Korean First Vice Foreign Minister Park Yoon-joo.

According to Seoul's foreign ministry, Landau conveyed his deep regrets over the detention of hundreds of South Korean workers in an immigration crackdown earlier this month at an electric vehicle battery plant construction site for a joint venture between Hyundai Motor Group and LG Energy Solution in Bryan County, Georgia.

A total of 316 South Korean workers returned home Friday, after being held in a detention center for a week.