Italian authorities are investigating the multi-million dollar trafficking of radioactive waste to north and east Africa in an exercise which could lift the lid on a colossal 'North-South' business linked to money laundering and gunrunning, say lawmakers and activists.

The UK Tory trade and industry spokesman, Alan Duncan, was under pressure last night to explain his alleged involvement in an elaborate operation to bust UN oil sanctions against apartheid South Africa. The claims come from two fellow oil traders who claim to have personal knowledge of his career before he entered parliament.

The latest environmental emergency in southern Nigeria's volatile Niger Delta has been brought under control by US specialists, Royal/Dutch Shell's Nigerian subsidiary said on Monday. The three specialists from the Houston-based Boots & Coots International Well Control company were flown in on Friday to the affected area, Yorla Fields, to deal with a blow-out at a well which shot jets of crude oil and gas 30 metres into the air for the better part of last week.

Through the thick white fog stinging with the smell of raw gas, boys clutching handkerchiefs to their noses patrol making sure no one starts an engine, takes a flash photograph or does anything that could light a spark and ignite the whole area. The continuous hiss of rushing gas, so loud that people within an arm's reach have to shout to each other, can be heard 500 metres (yards) away from the site of the oil wellhead that burst on Sunday on an Ogoniland farm in Nigeria's southeast.