Authorities in Nigeria say six foreigners kidnapped from a nightclub last week have been released.
The six, two Britons, an American, a Polish man, a German, and an Irishman were set free late Wednesday following 10 days in captivity. They had been abducted at gunpoint from a club in the oil hub city of Port Harcourt.
All of them were reported to be in good condition.
Hostage-takings have become nearly commonplace in Nigeria. At least 15 foreign oil workers have been kidnapped in the past two weeks. Only one Lebanese worker is still being held.
Earlier Wednesday, Nigeria's main oil workers union threatened to pull out of the troubled Niger Delta region because of the violence in the region.
Nigeria's government began a crackdown on militants in the delta last week, detaining dozens of people.
Militant attacks and kidnappings in the delta have caused a 20 percent decline in Nigeria's daily oil production since February.
On Sunday, the most prominent militant group, the Movement for the Emancipation of the Niger Delta said at least 10 of its fighters were killed by government forces in Bayelsa.
Some information for this report was provided by AP and Reuters.