Many Twitter users in Nigeria are talking about #NnamdiKanu, the director of RadioBiafra, operated by people sympathetic to the campaign to create the breakaway state of Biafra.
A pro-Biafra group says Mr Kanu was arrested by Nigeria's secret police on Saturday,Vanguard newspaper reports.In July, Nigerian authorities banned the station and jammed its signal.Pro-secessionists in the south-east declared Biafra an independent state in 1967, but the military defeated them after athree-year civil war which claimed more than one million lives.
