Kidnappers in Nigeria's Delta release 3 Dutch nationals - police
The kidnapping of expatriates by armed gangs seeking ransom money has been rife in the oil-producing Delta region, although it has tailed off since a 2009 amnesty was signed with militant groups there. Foreign companies have also improved their security.
(Reporting by Tife Owolabi; Writing by Matthew Mpoke Bigg; Editing by Mohammad Zargham)