Nigerian militant group the Niger Delta Avengers (NDA) said it attacked an oil pipeline in Nigeria’s restive southern energy hub and warned international oil companies (IOCs) not to carry out repairs on damaged energy infrastructure, Reuters reported.

NDA’s spokesperson, Mudic Agbinib, said that the group “took down Chevron Escravos export pipeline at Escravos offshore.” The group added that any attempt to use talks with the government as a distraction “will halt the dialogue process”. It is the first attack claimed by the Avengers since late September, according to Oil Price.

The country’s Petroleum Minister wrote in a tweet that Nigeria has managed to increase its daily crude oil production to 1.9mb. That’s still short of the country’s 2.2mb/d output before the militant attacks on oil infrastructure in the Niger Delta. However, current production levels are substantially better than the 1.3mb/d Nigeria produced in the spring of 2016.

The federal government of Nigeria has been in negotiations with the NDA to find ways to appease its members and restore oil production to more lucrative levels. The talks have had mixed results and did not include other militant groups in the area. The group has said it wants a greater share of the OPEC member’s wealth to go to the Niger Delta, where most of the country’s crude is produced.