Nigerian oil infrastructure is not unfamiliar with militant attacks, but now one terminal is facing disruption from people on the inside.
Senior ExxonMobil employees have gone on strike and have attempted to blockade the Qua Iboe oil export terminal in Nigeria's southern Akwa Ibom state as part of industrial action against the company.
The Pengassan branch of Mobil Producing Nigeria Unlimited called its members out on strike to protest the sacking of 84 union members and anti-labour practices by the company.
Union spokesman Jude Nwaogu said ExxonMobil last week sacked 66 Nigerian senior employees working on offshore projects and another 18 in the offices, replacing them with expatriates.
ExxonMobil confirmed the strike but said there had been no disruption to oil production and loadings at the terminal.
ExxonMobil produces around 900,000 bpd of oil at the terminal.