The oil industry has caused widespread environmental damage in the Niger Delta
Militants say they have blown an oil pipeline in south-east Nigeria.
The Niger Delta Avengers said it attacked a pipeline belonging to the oil giant Chevron.
The petrol firm refused to confirm whether an attack took place citing its long-standing policy of not commenting on such incidents.
This attack comes days before talks are scheduled to be held between militants and the government to end the violence in the oil-rich Niger Delta.
Since the start of this year growing militancy has slashed Nigeria’s oil production.
Following the latest attack, the Niger Delta Avengers warned foreign oil companies that they should not repair damaged infrastructure until any negotiations were completed.
The militants say they are fighting for a larger share of the country’s oil wealth for their communities.
The oil industry has caused widespread environmental damage in the Niger Delta.
But the government accuses the militants of holding it to ransom and has threatened to impose a military solution unless the attacks stop.
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