At first, Gambaryan and his colleague Nadeem Anjarwalla, Binance’s regional manager for Africa and a dual Kenyan-British national, were placed under house arrest. But when Anjarwalla escaped under mysterious circumstances in March, Gambaryan was transferred to the notoriously dangerous Kuje prison and charged with tax evasion and money laundering – seemingly as a scapegoat for his employer, which Nigerian officials have accused, without evidence, of tanking the value of the national currency, the naira.