Nigeria, April 15 -- In a dramatic courtroom development, Nigerian singer Peter Okoye, one-half of the defunct music duo P-Square, testified against his elder brother and former manager, Jude Okoye, on Monday in a high-profile N1.38 billion money laundering trial.

Appearing before a trial judge Alexander Owoeye at the Federal High Court in Lagos, Mr Okoye, known as Mr P, accused his older brother of secretly incorporating a company, Northside Music Limited, to collect and control P-Square's royalties without the knowledge or consent of its members.

As evidenced by prosecution counsel Aso Larry, Mr P told the court that Mr Jude and his wife used the company to divert substantial earnings from the group's digital royalties while excluding...