Henry Okah is being tried in South Africa, where he now lives. <br /><br />He's thought to be one of the main leaders of the Movement for the Emancipation of the Niger Deltao (MEND). <br /><br />The group has claimed responsibilty for the attack which killed 12 people, and has threatened more.<br /><br />In this Aljazeera exclusive, Yvonne Ndege reports from a MEND training camp in their heartland, the oil-rich Niger Delta.
