LAGOS, Nigeria (AP) — Amnesty International accuses Nigeria’s biggest petroleum producer, Shell, of manipulating oil spill investigations and documents in cases where the rights group says the company has wrongly reported on the cause and volume of pollution devastating the Niger Delta and made false claims about cleanup measures. The future of farmers and fishermen whose livelihoods are destroyed by such spills depends on reports that can be “very subjective, misleading and downright false,” according to an independent U.S. industry expert hired by Amnesty International to review documents newly obtained under Nigeria’s freedom of information law. The Amnesty report offers detailed analysis to back longstanding charges that oil companies blame sabotage for spills sometimes caused by corrosion and other faults in aging pipelines. Sabotage or oil theft means a community is not eligible for compensation. Shell Nigeria said it “firmly rejects (the) unsubstantiated assertions” and seeks “greater transparency and […]