Brazil's sugar, ethanol group Cosan CEO resigns

SAO PAULO, Oct 15 (Reuters) - The chief executive of Cosan (CSAN3.SA)(CZZ.N), one of Brazil's largest sugar and ethanol groups, unexpectedly resigned on Thursday.

Rubens Ometto Silveira Mello will remain as chairman of the board and will "dedicate himself exclusively to the company's strategic management," Cosan said in a statement.

The current chief commercial and logistics officer, Marcos Marinho Lutz, was appointed as the new executive officer. He will take up office on Nov. 1. (Reporting by Inae Riveras; Editing by Christian Wiessner)