- 2,104 viewsDuration: 2:1955-year-old Robert Kipkorir Tonui will spend the next 40 years of his life in prison, after he was found guilty of killing his wife Emmy Chepkoech Mitei 5 years ago in Konoin Bomet County.Delivering his sentence, Justice Julius Ng’arNg’ar agreed with the prosecution that the accused had meticulously planned and executed the cold-blooded murder of his wife by dousing her with petrol and setting her ablaze.