Another attack by suspected militants in the Niger Delta on two pipelines conveying crude oil and gas are threatening the operations of two of the nation’s refineries and power plants.

The attack comes a day after Chevron’s Okan offshore production platform around Escravos in Warri, Delta State was blown up, a development that led to the shutdown of the facility by the oil major.

On Thursday night, a pipeline transporting crude oil to Warri and Kaduna and a 16-inch gas line, owned by the Nigerian National Petroleum Corporation, were blown up.

A group known as Niger Delta Avengers has claimed responsibility for the explosion.

It said in a statement on its website, “To keep to our promise, the three days ultimatum given to Chief Government Ekpemupolo has elapsed and he failed to apologise to the Niger Delta Avengers, at 10:00 pm Thursday, May 5, 2016, our strike team 4 hit the Nigerian National Petroleum Corporation crude and gas lines.

“The crude line feeds the Warri and Kaduna refineries respectively, while the gas line feeds the Lagos and Abuja electricity power supply. With this development the Warri and Kaduna refineries will be shut down and all cities that depend on the gas line for power will all be in total darkness like the creeks of the Niger Delta.”