French probe on Muddy Waters/Casino spat seen lasting few more months

By Dominique Vidalon and Matthieu Protard PARIS (Reuters) - France's AMF stock market watchdog is in the midst of a formal investigation into criticism made by U.S. research firm Muddy Waters against French retailer Casino which should last a few more months, said a source close to the matter. The AMF is conducting in-depth investigations on a complex matter. Officials at Muddy Waters could not be immediately reached for comment.