He reportedly died at an isolation centre in Geagwalada,Abuja on Sunday.
He died after a brief illness at the age of 64.
The justice’s death is coming exactly a week after the state lost the President of the Customary Court of Appeal, Justice Ibrahim Shaibu Atadoga, after a brief illness.
The Kogi State Government on its website said Ajanah was born in 1956 to the family of MJ Fari Ajanah in Okene local government area.
Ajanah, whose remains will be buried in Abuja on Sunday, served as chairman, election petitions tribunal in Akwa Ibom state (2007) and chairman, election tribunal petitions in Rivers state (2008).