(GIN)—Oil is spewing unchecked into delicate ecological systems in southern Bayelsa State, Nigeria, after multiple bombings by militants in the area.

Community leader Eke-Spiff Erempagamo told AP news that the spill was “massive—the biggest in years.” Fishermen said oil had flowed unchecked for two days.

A spokesman for the Nigeria Agip Oil Company estimated a loss of 16,000 barrels a day, totaling at least 48,000 lost barrels of oil.

Attacks against the region’s oil and gas facilities had been a signature feature of the Movement for the Emancipation of the Niger Delta until a negotiated settlement in 2009. Rebels handed in their weapons in exchange for unconditional pardons, education and vocational training. But with the victory of Muhammadu Buhari as president, these programs were threatened with cancellation. Buhari recently agreed to extend the program for another year, but attacks on the pipelines have returned with new vigor.

Elsewhere in Nigeria, Boko Haram militants reportedly firebombed huts in the village of Dalori, some seven miles from the northern city of Maiduguri, the biggest city in Nigeria’s northeast. Some 86 people are said to have died in the attack, including children.

Meanwhile, the reinstatement of a Nigerian general accused of war crimes in the fight against Boko Haram has drawn condemnation from Amnesty International. According to an Amnesty investigation, Maj. Gen. Ahmadu Mohammed was in command of operations when the military executed more than 640 detainees after a Boko Haram attack on the detention center in Giwa barracks in March 2014.

“It is unthinkable to recall the officer who was sacked in 2014 before an inquiry had even begun,” the human rights group said.

But military spokesman Gen. Rabe Abubakar dismissed the Amnesty findings. “These are just allegations,” he said. “Until proven, no one should be punished unnecessarily.”

The London-based group said since March 2011, more than 8,000 young men and boys have been either shot, starved, suffocated or tortured to death in military custody, and no one has been held responsible.

Buhari promised to look into the issue when he came to power last year.