Nigerian militant group says it blew up two Chevron wells

A Nigerian militant group said on Wednesday that it had blown up two Chevron oil wells in the second such attack in a week on the company's facilities in Nigeria's oil-producing Delta region. An oil spill was seen in waterways and wetlands surrounding the Chevron sites after the attack, according to a Reuters witness and a local official, though the volume spilled could not be immediately determined. The attacks occurred as tensions flared between international oil companies and Niger Delta resi