The trial involving popular radio disc jock ZJ Wah Wa has been postponed in the Federal District Court in Bismarck, North Dakota, until May 18.
"Mr O'Hara entered a guilty plea, pursuant to the terms of a written plea agreement," said Clare Hochhalter, federal prosecutor and Assistant United States Attorney.
"He was allowed to plead guilty to one count of telemarketing fraud and, in exchange, the United States agreed to dismiss the remaining counts of the third superseding indictment," he continued.
Hochhalter said prior to trial, the judge requested a pre-sentencing report, which comprises a character and background check of O'Hara.
"They'll look for aggravating and mitigating circumstances," the federal prosecutor explained.
Wah Wa is detained at the Heart of America Detention Centre in Rugby, North Dakota. His Trial was originally set for February 23, 2015.
ZJ Wah Wa, whose given name is Deon-ville O'Hara, is charged with conspiracy to commit mail and wire fraud, wire fraud and money laundering conspiracy.
Wah Wa was arrested by United States law enforcement during a visit to Florida in May 2014. He, however, pleaded guilty to telemarketing fraud at a hearing in court on October 24, 2014.
Four other Americans connected with the case have also pleaded guilty. ZJ Wah Wa is one of 26 people (17 Jamaicans) named as part of the ring.