Warri - A militant group on Monday claimed an attack on a crude oil pipeline in Delta state, southern Nigeria, in the second attack on the same line in less than a week.
In an emailed statement, Niger Delta Greenland Justice Mandate (NDGJM) spokesman Aldo Agbalaja said "Opudo strike force, at about 11:30 pm on Sunday, September 18, 2016, struck the Afiesere-Ekiugbo delivery line in Ughelli, operated by NPDC/Shoreline."
The rebel group hit the same pipeline last Tuesday and vowed to "ground" the Nigerian economy, which is already in recession, in large part due to plummeting oil exports as a result of sabotage.
The NDGJM has stepped up its attacks after rival group the Niger Delta Avengers declared a ceasefire in August and entered talks with the Nigerian government.
"All agrarian products in the area surrounding the scene of the incident have been damaged as a result of the blast," a resident of the nearby Ekuigbo community, Efemena Akposire, told AFP.
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A military officer added: "Unlike previous attacks carried out by the group where they hack-sawed the pipelines, dynamite was used in this case."
Nigeria's military has boosted its presence in the oil-producing southern swamplands in response to the attacks, raiding suspected militant camps and clamping down on illegal oil refineries.
Various rebel groups have complained about poor living conditions in the area, where despite massive oil wealth most people live in poverty without access to basic services such as education and health care.
Distrust in the Nigerian security forces is widespread in the region. Last week the NDGJM complained of intimidation and vowed to "match force with the oppressor's brutality".
Ratings agency Standard & Poor's cut Nigeria's credit rating last week, saying the "marked contraction" in oil production from an average of 2.1 million barrels per day to 1.7 was hurting its economic prospects.