The Economic and Financial Crimes Commission has invited the former Governor of Imo State, Rochas Okorocha for questioning.
Although the details of the invitation were yet unknown, Mr. Okorocha, a serving Senator, was still with the EFCC as of Tuesday evening, sources said.
Okorocha had reportedly refused to honour previous invitations from the anti-graft commission.
He was arrested at about 4pm at his Unity House private office in Abuja after a five-hour standoff with EFCC operatives who trailed him to the location.
In February, Mr. Okorocha was invited for questioning by the Commissioner of Police in Imo State, Nasiru Mohammed.