A Russian and a Nigerian were convicted in May with $ 1 million worth of cocaine . Umeh , who prosecutors said served as a broker between suppliers in South America and distributors in West Africa , faces a minimum of 20 years in federal prison . The Russians were convicted on conspiracy charges related to at least three large shipments . Konstantin Yaroshenko and Chigbo Peter Johnson were arrested in May . They tried to bribe Liberian government officials , including the wife of Liberia 's president .
A Russian and a Nigerian were convicted in May with $ 1 million worth of cocaine . The Russians were convicted on conspiracy charges related to at least three large shipments . Konstantin Yaroshenko and Chigbo Peter Johnson were arrested in May . They tried to bribe Liberian government officials , including the wife of Liberia 's president .