At least six persons lost their lives in southeast Nigeria's Delta State after suspected militants attacked a military houseboat, an official said Thursday. 

Spokesperson for Army Capt. Jonah Unuakhalu said in a statement reaching Xinhua that at about 5:50 p.m. local time Wednesday, Nigerian Petroleum Development Company Houseboat deployed at Ejere junction in Warri South Local Government Area was attacked by suspected armed militants group. 

He said during the deliberate attack, two soldiers were killed, one wounded, one soldier missing while four civilian staff attached to the houseboat were shot dead. 

The attack occurred when other members of the troop were on pipeline patrol, he said, adding the suspected militants, who disguised as normal commuters, launched the attack from five speed boats mounted with 250 horse power outboard engines. 

No group has so far claimed responsibility for the attack.