A Nigerian Petroleum Ministry official told Reuters earlier on Tuesday that the government had entered a one-month truce with the Niger Delta Avengers and other groups.

"It was very difficult getting the NDA to the negotiating table, but we eventually did through a proxy channel and achieved the truce," the official was quoted as saying.

However, the militant group, which has demanded oil profits be shared with local communities in Nigeria, later denied the official's claims.

"The