Iyan Zazzau Bashir Aminu is death.
His family confirmed his death to the BBC, saying he had died in Lagos after a short illness.
Iyan Zazzau was one of those who sought the throne of the King of Zazzau after the death of the late King Shehu Idris in September 2020.
The deceased had diabetes as confirmed by his family.
Prior to his death, a court in Kaduna was hearing a case challenging the appointment of Ahmed Nuhu Bamalli as the new emir of Zazzau.
Iyan Zazzau Bashir Aminu hails from the Katsina family of the 17th Emir of Zazzau Malam Muhammadu Aminu.
Iyan Zazzau once held the throne of Dan Madamin Zazzau before becoming the Mayor of Sabon Gari.
He is also expected to become the next King of Zazzau.