Nnamdi Kanu, detained leader of the Indigenous People Of Biafra (IPOB) was arrested in Kenya, his brother, Emmanuel Kanu, said on Wednesday.
In a statement, Mr Kanu called for the immediate release of the secessionist, saying he committed no crime by clamouring for self-determination recognized United Nations laws.
What Mr Kanu who holds both Nigerian and British passports went to do in Eastern African country is yet unknown as at press time.
Many versions of where he was picked up have continued to crop up on social media with so many countries named.
“My brother Nnamdi Kanu demands the right to self-determination for Biafra. Self-determination is the right that underpins the United Nations,” Mr Emmanuel said.
“Because Biafrans support Nnamdi Kanu’s call for Biafran self-determination, my brother has now been subjected to the most serious violations of international law.
“Whilst visiting Kenya, Nnamdi Kanu was detained and handed over to the Nigerian authorities who then flew him to Nigeria.
“My brother has been subjected to extraordinary rendition by Kenya and Nigeria. They have violated the most basic principles of the rule of law. Extraordinary rendition is one of the most serious crimes states can commit. Both Nigeria and Kenya must be held to account. I demand justice for my brother, Nnamdi Kanu.
“Nnamdi Kanu holds both British and Nigerian citizenship. Nnamdi Kanu is Biafran, not Nigerian. He has rejected his Nigerian citizenship.
“The British High Commission in Nigeria must insist upon my brother’s immediate release. They must guarantee his safety and security. Nnamdi Kanu must be returned home to the UK to his wife and his sons who live here. The Foreign Secretary, Dominic Raab, must make clear to the Nigerian authorities that they will not tolerate the unlawful detention of British citizens and that the UK Government condemns the Nigerians and Kenyans for underminin