Movement for the Emancipation of the Niger Delta ( MEND ) claimed responsibility . No officials were hurt in the explosions in Warri in southern Nigeria . The key militant group in the oil-rich Niger Delta is an umbrella organization of several rebel organizations . - On March 26, a suicide bomber attacked an army checkpoint near Maiduguri, killing at least 10 soldiers and wounding 15 others. It was the group 's first claim for an attack since calling off a cease-fire .
Movement for the Emancipation of the Niger Delta ( MEND ) claimed responsibility . No officials were hurt in the explosions in Warri in southern Nigeria . - On March 26, a suicide bomber attacked an army checkpoint near Maiduguri, killing at least 10 soldiers and wounding 15 others. It was the group 's first claim for an attack since calling off a cease-fire .