Mr Wariebi, son of the Chief Justice of Bayelsa State, Justice Kate Abiri, has been reported dead in mysterious circumstances.

Boko Haram Islamists have killed 10 people and abducted 13 others in a raid on a village near the northeast Nigerian town of Chibok where the militants kidnapped over 200 schoolgirls in 2014, locals told AFP Sunday.

The Niger Delta Avengers (NDA) has announced a conditional ceasefire following months of attacks on key oil and gas facilities.