A jury found Udoamaka Onuigbo guilty Wednesday of three charges stemming from allegations she helped former Delta state Gov. James Ibori embezzle an estimated $101.5 million from the oil-rich state in the Niger Delta. On Tuesday, the same jury convicted Ibori's sister of 12 counts of money laundering and mortgage fraud.

Nigeria's anti-graft agency says Ibori stole as much as $292 million while governor in the oil-rich state in the Niger Delta. UK investigators claim Ibori put much of the money in English banks.

A Nigerian judge in December dismissed a 170-count fraud case against Ibori. Ibori was arrested May 12 in Dubai on a UK warrant and remains there, but is free on bail.