The 'repented' faction also urged the Indigenous People of Biafra (IPOB) embrace the current peace deal.
A breakaway faction, which revealed itself as the Reformed Niger Delta Avengers (RNDA), has released a statement signed by one Cynthia White, promising to cooperate with the government.
The faction said it decided to split from the NDA following appeal by former President Goodluck Jonathan and its conviction that the peace initiative of the Movement for the Emancipation of the Niger Delta (MEND) is genuine.
"We have decided to join the MEND Aaron Team 2 peace initiative through the clearing house of Niger Delta Dialogue and Contact Group (NDDCG) headed by HRH King Alfred Diette-Spiff," the statement said.
"We will also cooperate with the government by exposing the identities of our comrades who remain stubborn in their insistence to continue attacks.
"For example, it will shock the nation to know the Jekyll and Hyde personality behind the pseudonym 'Brigadier General Murdoch Aginibo' and our sponsors," the group added.
The group also urged the Indigenous People of Biafra (IPOB) embrace the current peace deal.
"Those advising Mr. Kanu (Nnamdi) to do otherwise do not love him nor appreciate the level of treason this simple act of common sense and humility can extricate him from.
"The Niger Delta will no longer be your proxy in a war to achieve your ambition.
"To our comrades in the NDA, we urge you to stop being defiant and embrace peace and the wise counsel we all received from former President Jonathan," the RNDA said.
The NDA had vowed not to be part of the peace talks secured by MEND, insisting that it would continue in its attacks on oil installations.