Criminology and Psychology

Gunmen aboard a speedboat attacked a security vessel as it travelled to a major oil industry port in Nigeria's Niger Delta, killing a Nigerian sailor, security sources said on Thursday.Around 15 unknown gunmen attacked the vessel late on Wednesday as it travelled along the Bonny river towards Onne, a port used to supply oil industry contractors and ships that service the offshore sector."The vessel was on its way to Onne when armed men attacked," one of the security sources, who works in the oil industry, said. Further details were not immediately available.Onne lies close to Bonny Island, home to a 400,000 barrel-per-day oil export terminal operated by Royal Dutch Shell and to the Nigeria Liquefied Natural Gas (NLNG) plant which exports 22 million tonnes per year of compressed gas.Nigeria, an OPEC member, is the world's eighth-biggest exporter of crude oil and disruptions to supply due to violence in the Delta have been one of the causes of the rise of world oil pric...