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An influential monarch in south-west Nigeria, the Olubadan, or ruler of Ibadan land, has died at the age of 101, his son has confirmed to the BBC.

Oba Samuel Odulana Odugade, who ruled over Nigeria's third largest city Ibadan, died in his sleep last Tuesday evening, Nigeria's Punch newspaper quotes palace sources as saying.

An official announcement of the Yoruba king's death is expected later.

Although largely symbolic, the Olubadan still has strong regional influence.

Nigeria's many monarchs vary in hierarchy and importance with some ruling over large areas, while others are traditional rulers of a village or town.

The Olubadan is one of the few unelected figures whom the government would consult on major policy issues in the south-west, reports the BBC from the capital, Abuja.

Speaking to the BBC, his son Prince Gbade Lana described the late Olubadan as "a good father, very very stern".

"He preached humility... he taught us that once you are humble you will be able to achieve anything in life."

Mr Lana, himself the Oyo state commissioner for information, said he hoped his father would be remembered for "the passion he had for Ibadan as a city... to see that Ibadan grew and became a better place".