Russian prosecutors sought Friday a nine-year jail sentence for Bolshoi ballet dancer Pavel Dmitrichenko over his alleged role in a January acid attack that nearly blinded the troupe's artistic director, Russian agencies said. The prosecution also asked the court to sentence Dmitrichenko's suspected associate Yury Zarutsky to 10 years for flinging the sulphuric acid in the face of Sergei Filin, a crime that shocked Russia's ballet world and scandalised the historic theatre.