The National and State Assembly Election Petitions Tribunal sitting in Abia State on Monday nullified the election of Senator Orji Uzor Kalu.
The tribunal in its verdict ordered for a rerun election for the Abia North Senatorial District.
Kalu, a former governor of Abia State, was elected on the platform of the ruling All Progressives Congress (APC) in the February 23 Presidential and National Assembly election.
Kalu, who is standing trial alongside his former Commissioner for Finance, Ude Udeogo, and his company, Slok Nigeria Limited, on an amended 39-count charge of money laundering to the tune of N7.6 billion is currently the Senate Chief Whip.
Candidate of the Peoples Democratic Party (PDP), Mao Ohuabunwa, had challenged his victory at the tribunal.