Nigeria cracks down on oil thieves

Nigeria loses lots of oil (30,000 barrels a day -see here) to oil thieves and is attempting to put a stop to it as reported here:

Security forces in Nigeria have killed 12 men they say were stealing oil from a pipeline in the southern Niger Delta.
Officials said that a gun battle broke out when troops on patrol came across a group using heavy drilling equipment to siphon oil from a pipeline.