According to the report, Okeke, 32, admitted to American prosecutors that he was involved in computer-based fraud between 2015 and 2019.
Joshua Stueve, a spokesperson for the United States District Court for Eastern District of Virginia, revealed that the suspect could spend 20 years maximum penalty in an American jail.
He would be sentenced on October 22, Mr Stueve said. Robert Krask, an American judge of the district, certified the guilty plea on Thursday morning.
Okeke and other alleged conspirators said to still be at large were accused of targeting American businesses in a probe led by the Federal Bureau of Investigation.