Mr. Oxley says he kept close contact with Marley during the final years of his life, ensuring the medical advice he received in Paris, London and the United States “would hasten his demise rather than cure him.”

“The last time I saw Bob before he died he had removed the dreadlocks, and his weight was dropping like a stone,” he says.

“He was very withdrawn, unbelievably small. He was shrinking in front of us. The cancer had done it’s job.”

Although widely dismissed as fiction, the account does tally with findings by UK scientists in 2014, who discovered the mysterious acral melanomas – the rare type of skin cancer that caused reggae musician’s demise – was in fact not caused by the sun.

Bob Marley’s son Ziggy has previously implied his Father was killed, saying in a 2013 interview about the death: “I don’t know what to believe … there are a lot of theories.”