Nigerian kidnappers on Saturday released the wife of a senior oil executive who was taken hostage in its oil capital of Port Harcourt last month, a company spokesman said.
Odichi Ugorji, spokesman for Lonestar Drilling, owned by the husband of Margret Idisi who was abducted on April 19, told AFP the woman was released unhurt.
He said no ransom was paid despite the demand by kidnappers that the family pay one billion naira (8.5 million dollars, 5.3 million euros) for her release.
There has been a surge of kidnappings in the oil region over the past two years as well as attacks on oil firms and facilities in recent months.