A company controlled by Hong Kong-based CK Hutchison has invested $1.7 billion in two ports near the Panama Canal, it said on Wednesday, surpassing the amount required under its contract, which is being audited by Panamanian authorities.

CK Hutchison Holdings Ltd rejected accusations it failed to pay about 1.2 billion balboas ($1.2 billion) to the Panamanian state over the concession contract to run the two key ports in the Central American country.

Panama has launched a formal investigation into a controversial port contract awarded to CK Hutchison, a Hong Kong-based conglomerate, over the operation of two major ports in the country. Attorney General Luis