Nigerian Chief's Son Kidnapped

The son of Iriebe Chief Eze Francis Amadi was taken by gunmen as he was being driven to school, they say.

The kidnapping comes four days after a three-year-old British girl was freed from four days in captivity in a case which shocked many Nigerians.

Militants often take oil workers hostage as part of their campaign to keep more oil money in the Delta.

The kidnappings and attacks on oil facilities have cut Nigeria's oil output by about 25% over the past year.

Samuel Amadi was kidnapped by gunmen in two cars as he was on his way to school in Nigeria's oil capital, Port Harcourt, security sources have told the BBC.

The BBC's Abdullahi Kaura Abubakar in Port Harcourt says the attack was similar to that in which Margaret Hill was taken last week.

At least three children have been taken hostage in the past month in the Delta - a new phenomenon.