Grekov was accused of participating in the White Movement in the Crimea during the civil war, and in 1930, his son was arrested in connection with the "Platonov Affair" and sent to the Solovki Islands Penal Colony.
In the context of the civil war in Crimea, Grekov was accused of participating in the White Movement, and in 1930, his son was arrested for the "Platonov Affair" and sent to the Solovki Islands Penal Colony.