Nigerian Senate Deputy President Ike Ekweremadu fell ill on Tuesday during interrogation by operatives of the country's anti-graft body, local media reports said Thursday.

Ekweremadu was being grilled over his numerous assets in Nigeria, United Kingdom, United States and United Arab Emirates (UAE).

He was asked to account for how he came about over 60 assets, the reports said.

The senior lawmaker was permitted by the Economic and Financial Crimes Commission (EFCC), to seek medical attention in the hospital, when it appeared that he was getting weak.

The resumption of the investigation on Ekweremadu's assets will now be determined by his fitness and the medical report from the hospital.

The Nigerian government, through the Special Presidential Investigation Panel for the Recovery of Public Property, had traced 22 assets to Ekweremadu.

The said assets were suspected to have been acquired through illicit funds.