Rally driver Asad Khan died Sunday at Avenue Hospital.
His brother Adil confirmed the death.
His other friends too confirmed Khan had died days after his admission to the hospital after he lost blood out of injuries.
Khan had been admitted there after losing lots of blood following injuries he suffered in his Kileleshwa house in an altercation with his girlfriend Maxine Wahome. Maxine is also a rally driver.
The family and police said Asad was fighting for his life at the High Dependency Unit at the Avenue Hospital in Nairobi following the domestic spat which led to the arrest of Maxine.
Adil said his brother lost a lot of blood after the brutal assault last Tuesday morning.
According to Adil, his brother was injured by Maxine after she allegedly returned home drunk from a dinner party she had attended.
Maxine told police Khan was injured in an altercation with her after she came home late in the morning.
She added he broke a window pane that injured him in the ankle as she hid on a balcony.
She is supposed to report to the police on Thursday. But police said the death may change their investigation for now.