Alloys Gekonge Tumbo-Oeri, who died yesterday aged 70, was known as a teacher, politician and analyst. The professor of biochemistry and former principal of the University of Nairobi’s Chiromo campus, died of cardiac arrest, his family said yesterday. Prof Tumbo (pictured) served as principal of the Biological and Physical Sciences College between 1997 and 2002.  His former students include Deputy President William Ruto and MPs Naomi Shaban (Taveta), Eseli Simiyu (Kimilili) and Robert Pukose (Endebes) as well as former Kakamega senator Boni Khalwale. “He was a good teacher. He was helpful and always gave his time to ensure that you understood a particular subject. He always encouraged me to further my studies. The country has lost an intellectual,” said Dr Shaban. At the time of his death, Tumbo was a consultant with several universities, State departments and county governments. He was also a political analyst for the KTN News TV channel.