The Dubai Court of Cassation ruled on Monday there were no grounds to block the extradition of former Delta state Gov. James Ibori, who was detained in Dubai in May on an Interpol warrant.

"James Ibori has failed to get the appeal court in Dubai to stop his extradition to Britain for trial. We are excited about this ruling," Economic and Financial Crimes Commission (EFCC) spokesman Femi Babafemi said.

Ibori, governor between 1999 to 2007, had appealed the July ruling of lower a court in Dubai that he should be repatriated to Britain for trial.

British investigators claim Ibori looted more than $292 million in state funds while in office in the oil-rich Niger Delta region. He is accused of channeling much of the money to English banks.

Nigeria's government is widely considered by international monitors as one of the world's most corrupt. It's unclear when Ibori's extradition could take place.