The abductors of Mrs Augusta Douglas Ayam, sister to the Special Adviser to the President, Documentation and Strategy, Mr Oronto Douglas, have demanded N500 million as ransom.
She was kidnapped in Bayelsa State by unknown gunmen.
The abductors made the demand when they eventually contacted the family.
The kidnap occurred almost one year after the burial of her father at which the former Governor of Kaduna State, Mr Patrick Yakowa, and the Former National Security Adviser to the President, Gen Andrew Azazi, lost their lives in a helicopter crash.
A family source said the kidnappers called with a Glo mobile number to make the demand.
Police spokesman in Bayelsa State, Mr Alex Akhigbe, confirmed the latest development. He said the police were doing all they could to secure her immediate release without harm.