SEC said to probe Rio Tinto on Mozambique deal impairments

The US Securities and Exchange Commission (SEC) is investigating a $3-billion impairment charge Rio Tinto Group booked on a Mozambique coal deal almost four years ago, according to a person familiar with the matter. The investigation is ongoing and is separate to an internal Rio review into payments the company made to a consultant regarding an iron-ore project in Guinea, said the person, who asked not to be identified because the investigation is private.