The death of KCB Group Head of Data Protection Rosemary Chemutai Koech Kimwatu takes a new turn after a post-mortem examination confirms suicide, while details emerging from her family and investigations point to prolonged marital and financial difficulties before her death.
Koech, 40, is found dead at her home in Ngong, Kajiado County, on August 21, 2026. Chief Government Pathologist Dr Johansen Oduor conducts the post-mortem examination at Lee Funeral Home in the presence of detectives and members of her family.
Police, however, continue investigating the circumstances surrounding her final days as two different accounts emerge about the state of her marriage and her final conversation with her husband.
The late KCB employee Rosemary Koech. Photo/Screengrab
Marriage under strain
According to information given to investigators by Koech’s family, her marriage had faced prolonged difficulties involving domestic and financial disagreements.
Her parents and siblings reportedly said the couple, who had been married for more than 20 years and had four children, had experienced increasing tensions before she died.
Her mother told investigators that Koech’s husband had at one point accused her of drinking and associating with what he considered bad company. He allegedly indicated that he wanted her and the children to return to her parents while she received counselling.
Koech, however, reportedly gave her parents a different account.
A building entrance with a KCB Group signage. Photo: The Star Source: Facebook
She allegedly complained that her husband had accumulated debts while relying on her financially and that she had carried much of the family’s financial responsibilities because he was unemployed.
She also reportedly expressed frustration that she had helped finance construction of their family home as the marriage continued to deteriorate.
The allegations are contained in accounts given to investigators and have not been independently established by a court.
Distress after Mombasa trip
The family’s account says Koech’s condition worsened after she travelled to Mombasa for a seminar where she was scheduled to make a presentation connected to KCB.
She reportedly became distressed and began exhibiting unusual behaviour, prompting her siblings to travel to Mombasa.
She was subsequently admitted to Chiromo Hospital in Nyali and later transferred to Tranquil Medical Centre, spending about two weeks in treatment.
According to her family, she was diagnosed with depression.
After discharge, she reportedly stayed with her parents in Ngong as she continued recovering.
Family seeks safe home
The family says Koech later returned with her mother to the matrimonial home to collect some belongings.
They reportedly encountered hostility from her husband and his mother, who allegedly ordered them to leave and warned them against returning.
The family further alleges that her husband threatened to mobilise motorcycle riders against them, claiming political influence.
Her parents and siblings subsequently secured and furnished a separate home where Koech could stay with her four children.
She reportedly lived there for about two months before her death.