This plummeted over 80% when the dam began operation, and a decade later, through extensive government investment to restock the river, the species number is still less than half the original amount.

CNN: STORY HIGHLIGHTS

In response, the government launched an air, sea and land operation to capture the dam.

ECONOMIST: Sri Lanka at war

Mr Zeidan thanked the Egyptian authorities for their "judicial co-operation" over Mr Gaddaf al-Dam.

BBC: Gaddafi cousin Ahmed Gaddaf al-Dam arrested in Egypt