The youngest suspect was aged just 13 when she was recruited and 14 when she murdered her 27-year-old victim, Ukrainian prosecutors say. The suspect, dubbed Katya to preserve her anonymity, was contacted via the Telegram app by an operative of Russia’s FSB spy agency, who seduced her into acting at his behest, Ukrainian investigative journalism outlet Slidstvo has reported. Katya was told to send a picture of herself wearing makeup to appear older, then the operative reportedly baited a Ukrainian soldier, Serhiy, and lured him into a date with Katya. Once on the date, Katya slipped Serhiy a substance mailed to her in advance by the operative, according to investigators. Prosecutors say the substance was methadone and that, once Serhiy was incapacitated, Katya was instructed to kill him while on a live video link to her FSB handler. According to the indictment, she suffocated him with a pillow.