Michael Oyamo, the man holding the trump card in the killing of Sharon Otieno, is a quiet man with an intimidating physique.
Mr Oyamo (pictured), in his late 30s, is one of the dozen personal assistants of Migori Governor Okoth Obado, described as a loyalist. The former Kenya Navy soldier is feared by Mr Obado’s critics and it is unclear when or why he left the military.