The governor of Kenya's Nyamira county, located in the west of the country, has died while undergoing treatment at a hospital in the capital, Nairobi.

John Nyagarama was 74 years old.

A Nyamira county official is quoted by local media as saying that the governor's family will give more details on the cause of death.

The governor was hospitalised for weeks and on Sunday he was placed under life support, the Star newspaper reports.

Mr Nyangarama's party leader Raila Odinga has tweeted his condolences:

The governor was serving his second and final term after he was re-elected in 2017.

His deputy, Amos Nyaribo, will take over as governor for the remaining period of the term until the 2022 elections in accordance with Kenya's constitution.