South Korea probes human rights abuses in Hyundai raid; Trump says foreign workers 'welcome'

South Korea said Monday that it would investigate whether its workers suffered any human rights violations during a raid by U.S. immigration authorities at a Hyundai plant in Georgia.

HONG KONG – South Korea said Monday that it would investigate whether its workers suffered any human rights violations during a raid by U.S. authorities, as President Donald Trump insisted that he did not want to "frighten off" foreign investment.

Foreign workers are "welcome" in America, Trump said on social media Sunday, after the emotional return of more than 300 workers to South Korea. But their detention following a raid by immigration authorities at a Hyundai plant in Georgia has stunned the key U.S. ally.

“I understand that the government is conducting a more thorough review with the companies to determine whether any human rights violations occurred,” presidential spokesperson Kang Yu-jung said in a press briefing Monday, according to the Yonhap News Agency.

“The foreign ministry is looking at whether our demands were properly addressed, and the companies are also conducting their own reviews, to check whether any measures were insufficient on either the Korean side or U.S. side,” Kang said.

NBC news reached out to Immigration and Customs Enforcement and was deferred to the White House for comment. The White House did not respond to NBC News' request for comment.