The Niger Delta Avengers on Saturday claimed responsibility for the destruction of a major oil pipeline in southern Nigeria , breaking a ceasefire the militant group had declared a month ago. In a statement, NDA spokesman Mudoch Agbinibo said the group attacked the Bonny pipeline in Rivers State on Friday as " a wake up call ", expressing frustration with the negotiations the militants have been holding with authorities. Agbinibo said the NDA was " still in favour of the dialogue " but accused the government of creating " shameful scenes obtainable in Nollywood acts ", a reference to Nigeria's huge film industry, accusing authorities of intimidation and blackmail. " There has been no progress and no breakthrough, " he said. The Shell Petroleum Development Company (SPDC), which operates the pipeline, said the damage was being investigated. "I can't categorically tell you if it was an attack, " a company source...