Chevron has resumed oil production in Nigeria's southern Delta region just days after a militant group seized control of one of its flow stations.
U.S.-based Chevron shut down several facilities last week after ethnic Ijaw militants, who belong to the Niger Delta People's Volunteer Force, took control of the Idama flow station to protest the arrest of their leader, Moujahid Dokubo-Asari.
They have since left the plant and Mr. Dokubo-Asari has called for calm.
His group had threatened to blow up oil facilities in the region after the government detained him for comments he made supporting the breakup of Nigeria.
Authorities say they will formally charge him with treason.
Some information in this story privided by AFP.