Niger Delta gunmen have released three Dutch nationals who were abducted earlier this week, a Nigerian activist who had accompanied the trio but was earlier released has said.
Amsterdam-based environmental activist Sunny Ofehe and the three Dutch nationals, two men and a woman, were seized Sunday after armed men in a dinghy stormed their boat.
The group, which included another Netherlands-based Nigerian, were blindfolded and eventually taken to an unknown location where the two Nigerians were abandoned.
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Scores of foreigners have been abducted in the southern Niger Delta region, home to Africa's largest oil industry, with many released on payment of a ransom.
Employees of foreign oil companies are required to have an armed escort when travelling in the Delta, but international journalists, aid workers and others typically avoid taking a security detail.
Dutch printing company Gerrits & Leffers had confirmed that two of its employees were among those abducted and that the pair were in Nigeria to help Niger Delta peace activists publish a magazine.
The third Dutch national was a documentary filmmaker, NOS TV reported, and the group was en route to visit a hospital financed by oil company Chevron when the kidnapping took place.