An acrimonious divorce involving Russia’s richest woman descended into a gun battle over the country’s most successful online retailer, killing two people and wounding seven. Tatyana and Vladislav Bakalchuk,

Russia’s richest businesswoman, Tatyana V. Bakalchuk, has been locked in a dispute with her estranged husband for months over the fate of her company, Wildberries.

The ex-husband of Wildberries founder Tatiana Bakalchuk, Russia’s wealthiest woman, was arrested Thursday following a deadly shootout at the online retailer’s headquarters in Moscow the day before, his lawyers said.