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')Armed men in speedboats have abducted a Romanian crew member after an attack on an oil tanker off Nigeria's southern coast, security sources say.
The MT Meredith, loaded with 4,000 tonnes of diesel, was badly damaged in the attack early on Wednesday.
"The ship called for assistance as its engine and superstructure were reported to have been seriously damaged," a private security source, who asked not to be named, said.
The Movement for the Emancipation of the Niger Delta (Mend), which wants greater autonomy for the region, claimed that an "affiliate group" carried out the attack.
"This recent attack should send a clear message to the oil companies that even with the four Mantra class seaward defence boats and two Augusta helicopters acquired by the navy, the only thing that can stop attacks is justice," a Mend statement said.
"Mend is in touch with the group and will ensure the abducted man is released unharmed at the earliest convenience."