(Adds joint statement of Vostochny Bank shareholders) MOSCOW, Oct 28 (Reuters) - Rival shareholders in Russia’s Vostochny Bank said on Wednesday they had agreed to settle a corporate dispute that U.S. investor Michael Calvey has said was the root cause of his arrest. Calvey, a prominent investor and founder of private equity group Baring Vostok, was detained along with other fund executives in early 2019 after state investigators accused them of embezzlement related to mid-sized lender Vostochny. Calvey, who denied the accusations, is under house arrest until Nov. 13.