The Senator representing Abia South senatorial district and Chairman, Senate Committee on Power, Enyinnaya Abaribe, has been arrested.
He was arrested by security operatives in mufti, who trailed him from the National Assembly complex when he was leaving the premises on Friday.
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The reason for his arrest was not confirmed as efforts to speak with his media aide, Mr Uche Awom on phone was not successful.
Abaribe, a former deputy governor and a ranking senator on the platform of the Peoples Democratic Party, PDP, has been critical of the APC-led government, Daily Post says.