The county boss was involved in an early morning accident along the Murang’a-Thika road, near Kabati.
He was together with his bodyguard who broke his legs after the car lost control due to a tyre burst, the police have said.
The car went through the rail trapping Dr Gakuru.
His driver is reportedly doing fine, while his PA, Gakuru and his bodyguard are in critical condition.
Wahome becomes the second Nyeri governor to die in office after Nderitu Gachagua who died in February, 2017.
Gachagua lost his two year battle to pancreatic cancer while undergoing treatment in London.
Mr Gakuru was overwhelmingly elected by the Nyeri people on August 8 beating the immediate former governor, Samuel Wamathai.
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