"Rio launches corruption probe at Oyu Tolgoi", 27 October 2025

Oyu Tolgoi LLC, 66% owned by Rio Tinto (ASX: RIO), has sought support from law enforcement for an internal investigation into allegations of corruption and unethical conduct at the copper operations in Mongolia.

Olyu Tolgoi LLC confirmed an investigation is underway, reaffirming the company’s strict zero-tolerance policy toward corruption and unethical conduct.

Rio Tinto declined to comment.

“We are aware of allegations involving procurement-related activities and conducting a comprehensive internal investigation and have sought cooperation of law enforcement authorities,” Oyu Tolgoi LLC said in a statement.

“As investigation is ongoing, we are unable to provide further comment at this time.”

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