Gunmen kidnapped 20 foreign workers in three attacks in Nigeria's oil-producing Niger Delta region but eight were freed within hours after a mix-up, authorities and militants said on Thursday.
World oil prices rose on news of the kidnappings, but fell sharply after MEND said it was releasing the captives.
Separately, three Koreans and eight Filipinos were seized from a power plant construction site in Rivers State by suspected ransom seekers, diplomats said.
676
20 Foreign Workers Kidnapped in Nigeria
Gunmen kidnapped 20 foreign workers in three attacks in Nigeria's oil producing Niger Delta region
