Former Speaker of the House of Representatives, Patricia Etteh has been arrested by the Economic and Financial Crimes Commission.
Her arrest followed an allegation of fraud involving a Niger Delta Development Commission (NDDC) contract.
She was arrested on Tuesday May 17, by the anti-graft agency in Abuja for questioning.
Etteh was elected Speaker in 2007 but resigned only after a few months amid allegations of financial misappropriation.
She was abroad for a while studying, after a political career with no significant academic credentials.
She remains the only woman in Nigeria history to have occupied such political office, though briefly.