The Niger Delta Greenland Justice Mandate said in a statement that it attacked the Ogor-Oteri pipeline in Delta state, operated NPDC and Nigerian energy company Shoreline, at around 03:00 a.m. (0200 GMT) on Tuesday.

A spokesperson for the state oil company NNPC could not immediately be reached and Reuters has not been able to independently verify details of the alleged attack.

OPEC member Nigeria has seen its oil output fall by around 700,000 barrels a day to 1.56 million bpd due to attacks on oil pipelines in the southern energy hub, home to much of the country's oil and gas wealth, since the start of the year.

"The Niger Delta Greenland Justice Mandate remains underailed on its mission to getting justice for the people," said the group, previously unknown before an attack on August 11. It also criticised other militants for participating in talks with the government.

It comes the day after Niger Delta Avengers, the group that claimed responsibility for most attacks in the impoverished region where militants want a greater share of the country's oil wealth, said it had halted hostilities. 

--reuters--