The court turned down an appeal to cancel the guilty verdict, under which the veterinarian was sentenced to a year of suspended imprisonment.
In 2003, Duka was arrested by Federal Drug Control inspectors while in the process of buying 28.4 mL of anesthetic Bioketan that contained 2.3 g of Ketamine.
In 1998, the Agriculture Ministry removed Ketamine from the list of substances for veterinary use. In 2003, the Federal Drug Control opened six criminal cases after inspecting several veterinary clinics. In October 2005, a Moscow court acquitted a plastic surgeon accused of illegally selling Ketamine on lack of evidence.
In January 2005, the Agriculture Ministry and Health Ministry ordered that Ketamine be re-added to the list of authorized substances.