Briefs

Renault CEO Carlos Ghosn publicly apologized for wrongly accusing three of his managers of corporate espionage. The automaker fired the men in January, claiming they had taken payments from Chinese firms for company secrets. After French police discredited the claims this month, Ghosn gave up his 2010 bonus and offered to reinstate and compensate the managers. COO Patrick Pélata and other executives involved in the mishandled probe will also return their bonuses. The French government, which owns a 15 percent stake in Renault, is demanding an independent inquiry.

Switzerland's UBS (UBS) said it received subpoenas from U.S. authorities investigating possible attempts to manipulate the setting of the London interbank offered rate. Libor rates are set daily by the British Bankers' Assn., based on data it gets from a panel of banks on their borrowing costs. The validity of Libor, a benchmark for more than $350 trillion of derivatives and corporate bonds, was questioned during the credit crisis as banks became wary of lending to each other because of mounting losses.