(AGI) Moscow, Dec 2 - Russian authorities have opened a murderinvestigation in connection with the disappearance a few daysago of Coca-Cola executive Dmitry Soshnev in St. Petersburg,the Tass news agency reported. Mr Soshnev, 37, has not beenseen since he left his office last Friday. There is no newseven about his car, a BMW he used to drive to work. Coca Colahas a dozen plants in Russia. When questioned by police, theexecutive's mother said that her son had a large sum of moneyon him. . .