Militants attacked a Chevron ( CVX.N ) platform in Nigeria’s oil-rich Niger Delta region late on Wednesday, a navy spokesman said on Thursday, amid growing fears of a revived militant campaign in the region. It is the latest in a series of attacks on oil facilities in Africa’s top oil exporter. President Muhammadu Buhari has vowed to crack down on groups attacking oil facilities in the Delta region, which produces most of the country’s oil. Navy spokesman Chris Ezekobe said the attack occurred about 40 nautical miles from the Escravos terminal, around the southern city of Warri. U.S. energy company Chevron Corp did not immediately respond to a request for comment. Ezekobe said militants had “blown up” the facility but did not say which militant group was responsible. There were no immediate details of any casualties. A group known as the Niger Delta Avengers claimed responsibility for the attack. […]