SEOUL: The United States has urged South Korea to improve procedures in competition hearings led by the Asian country's fair trade agency, the Office of the US Trade Representative (USTR) said on Tuesday.

US parties had been denied certain rights, including the opportunity to review and rebut evidence against them, USTR said, adding that pending amendments to South Korea's related law failed to address US concerns.

It did not say whether this consultation was related to any specific company or case.