Justice Prof Otieno Odek, a senior judge sitting in the Kenyan Court of Appeal was on Monday collapsed and died in his home in Kisumu County.
It was not immediately clear the circumstances that led to Justice Odek's death.
The senior judge was a witness for the state in a case where Director of Public Prosecutions (DPP) Noordin Haji has charged city lawyer and former JSC Commissioner Prof Tom Ojienda.
Odek had been a partner at Ojienda's law firm before moving to the bench and was set to testify against his former colleague who is facing charges of fraud over Sh89m he received as legal fees from Mumias Sugar Company.
More follows