Ọnụ, who was a former Minister of Science and Technology under Muhammadu Buhari’s administration, died in an Abuja Hospital.
A source, close to the deceased, confirmed the death on Thursday, April 11.
Onu, a former governor of Abia State, died after a brief illness in an undisclosed hospital.
He hailed from Ụbụrụ in the Ohaozara local government area of Ebonyi state.
The late 72-year-old former minister contested for the presidential flag of the All Progressive Congress (APC) during the 2023 general election but lost to President Bola Tinubu.
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Onu was a Nigerian politician, author, and engineer until his death in April 2024.
He was the first civilian governor of Abia State and was the minister of science, technology, and innovation of Nigeria from November 2015 until his resignation in 2022.
The former Abia state governor was the longest-serving minister of the ministry.
However, neither his family nor the Ebonyi state government has issued any statement at the time of this report.