A Nigerian man has been rescued from the garage of his parents' house in the northern city of Kano, where he had been locked up for three years, police say.
Ahmed Aminu, 30, was discovered after a police raid on the family's residence.
Neighbours had alerted a local NGO about his plight, and the police were then called.
Mr Aminu's father and step-mother have been arrested and police say further investigations are under way.
Nigeria's 'torture houses' masquerading as schools
In a horrific video shared on social media, an emaciated Mr Aminu, too frail to walk, was assisted into a vehicle as he was taken to hospital.
Professor PLO Lumumba is known for his voice on African issues.
As the #ZimbabweanLivesMatter spreads far and wide, he came out to comment on the situation in Zimbabwe. He called for a government of national unit which the government of Zimbabwe has dismissed on several occasions.
He also questioned the compensation of white farmer which was announced by Zimbabwe.
Here is the full speech;
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