Deputy Senate President, Ike Ekweremadu has reportedly been held by the Economic and Financial Crimes Commission (EFCC) since 9a.m, Tuesday morning.
He was reportedly called in for questioning and was still being interrogated at the Commission as at press time.
Ekweremadu, the most-senior member of the opposition Peoples Democratic Party (PDP) in public office, was invited for questioning by the anti-graft body last week Tuesday.
The invitation became public hours after EFCC operatives laid siege to his Apo Legislative Quarters, Abuja home.
He has faced multiple allegations of sharp practices in recent years, including claims that he connived with others to forge Senate standing rules which led to the controversial election of principal officers in June 2015.
He has also been accused of owning multiple properties abroad, some allegedly purchased using shell firms and political associates fronting for him which he has strongly denied alleging political persecution.