South Korea struck a deal with the United States on Sunday to release more than 300 workers back into the country’s custody after they were arrested in a sweeping workplace immigration raid.

The raid, which occurred at a Hyundai plant in Georgia, was the culmination of a months-long investigation into unlawful employment practices and other crimes at the plant.

All 475 people taken into custody were in the United States illegally, according to the Department of Homeland Security.

The Department of Homeland Security emphasized that companies who use illegal migrant labor ‘will be held accountable’ in a statement released shortly after the raid.

“Together, we are sending a clear and unequivocal message: those who exploit our workforce, undermine our economy, and violate federal laws will be held accountable.”

Legislators such as Representative Anna Paulina Luna, R-Fl. were quick to express outrage at Hyundai over allegedly employing hundreds of illegal immigrants.

Trump administration border czar Tom Homan vowed that there will be more workplace raids when asked by CNN’s Jake Tapper during an interview.

“The short answer is yes,” Homan said. “We‘re going to do more worksite enforcement operations because number one, it‘s a crime to enter this country illegally. Number two, it‘s a crime to knowingly hire an illegal alien, and these companies that hire illegal aliens, they undercut the competition that’s paying U.S. citizen salaries.”

The South Korean government has said that they will take ‘all necessary measures’ to secure the release of those detained in the raid.

“The government will ensure that all necessary measures are effectively implemented to achieve both the swift release of our detained citizens and the stable implementation of the investment projects,” South Korean Presidential Chief of Staff Kang Hoon-sik said Sunday.