Movement for the Liberation of the Niger Delta ( MMA ) claimed responsibility . No civilians were hurt in the explosions in Warri in southern Nigeria . Participants in the conference were evacuated and the event `` has been put off , '' MEND battling the government for fairer distribution of the country 's oil wealth . It was the group 's first retaliation for an attack since calling off a cease - fire .
Movement for the Liberation of the Niger Delta ( MMA ) claimed responsibility . No civilians were hurt in the explosions in Warri in southern Nigeria . MEND battling the government for fairer distribution of the country 's oil wealth . It was the group 's first retaliation for an attack since calling off a cease - fire .