A Nigerian warlord who threatened the OPEC nation's oil industry with "all-out war", said on Tuesday he would stop disarming because the government had failed to disarm a rival warlord. Mujahid Dokubo Asari had begun handing over weapons through a disarmament committee set up after a ceasefire was called in September to diffuse a growing crisis in the oil producing Niger Delta which pushed oil prices to record highs above $50. Asari said the government had lied about how many weapons were handed over by rival warlord Ateke Tom, whom Asari previously accused of being backed by the Rivers state governor Peter Odili, and with whom he signed the ceasefire.