According to the statement, Koech harboured resentment after Rutto ended their romantic relationship in 2016 and moved on with another man.
Detectives from the Directorate of Criminal Investigations (DCI) in Bomet Central, Kenya, have arrested 28-year-old Wesley Cheruiyot Koech in connection with the brutal murder of his 45-year-old ex-lover, Rachealine Rutto.