Italian investigators have taken another step towards bringing big name oil executives and Nigerian officials to trial over a long-running graft scandal involving the award of a prized deep-water oil block in the Niger Delta to a little-known indigenous player, and later to Eni and Shell.

International campaign organisation Global Witness (GW) reported that sources close to Italian law enforcement had confirmed a request that Shell, Eni and several Eni executives, including chief executive Claudio Descalzi, be sent to trial for alleged corruption offences related to the acquisition in 2011 of OPL 245.

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