Protest threatened over memorial 20 years after Ken Saro-Wiwa execution

Twenty years after 'judicial murder', Nigeria's Ogoni people highlight international storm over oil spillage pollution

Leaders of Nigeria's Ogoni people have threatened to disrupt the country's oil industry if the government does not release a British artwork commemorating the 20th anniversary of the execution of the writer Ken Saro-Wiwa.

The memorial, in the form of a large bus, has been impounded by customs in Lagos for six weeks because it is considered politically inflammatory. A quote from the writer on the side of the bus accuses the oil companies of "practising genocide against the Ogoni" .