Gunmen armed with explosives have attacked the home of the Presidential Adviser on the Niger Delta, Mr Timi Alaibe in Bayelsa State, Nigeria's Niger Delta region.

Alaibe, who was the main co-ordinator of the amnesty programme for militants in the region last year, was not at home when the attack happened late on Thursday night, his aides and family members said.

"His house in Opokuma was attacked by yet-to-be identified gunmen some minutes to midnight last night. They attacked the place with dynamite and guns causing damage to the building," Bayelsa state police spokesman Eguavoen Emokpae said.

He said the motive for the attack was unclear and no arrests had yet been made.