Lagos , Nigeria ( CNN ) -- The mother of Nigeria 's Finance Minister Ngozi Okonjo-Iweala has been released by her kidnappers , five days after she was seized from her home , Nigerian police said Friday . Kamene Okonjo is well and in good health , police spokesman Frank Mba told CNN . `` The Okonjo Family is full of thanks to the Almighty for this happy development , '' a finance ministry spokesman said in a statement . Read more : `` Massive manhunt '' for captors of Nigeria 's finance minister 's mother . Okonjo , an academic who is reportedly in her 80s , was abducted on Sunday from her home in Ogwashi-Uku , in Delta State . The kidnapping sparked what officials described as `` a massive manhunt . '' It remains unclear who her abductors were or whether their motive was financial or political . The U.S. State Department warns U.S. citizens against travel to Delta State , among others , because of the risk of kidnappings , robberies , and other armed attacks . Okonjo-Iweala has sought to push through reforms and tackle corruption while in office . She lost her bid in April to become the next president of the World Bank -- the first ever challenge to the U.S. nominee in the institution 's history . CNN 's Laura Smith-Spark contributed to this report .
The mother of former Prime Minister Daniel Okonjo - Iweala is freed . Mrs Okonjo was abducted five days ago from her home . Okonjo is well and in good health , a police spokesman said . It is unclear who her abductors were or what their purpose was .