(BBC NEWS) A convicted internet fraudster has been placed under investigation in Nigeria for allegedly masterminding a "mega scam" from a maximum-security prison worth at least $1m (£773,000).
Anti-corruption officials said Hope Olusegun Aroke used a "network of accomplices" for the fraud.
He was arrested in 2012 and has been serving a 24-year sentence at the Kirikiri Maximum Security Prison.
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But a preliminary investigation found he still had access to the internet.