Conrad Murray – who was the pop icon’s doctor at the time of his death – branded Joe ‘one of the worst fathers to his children in history’ in footage obtained by celebrity website – The Blast.

Murray was convicted of Michael’s involuntary manslaughter and sentenced to four years in prison after he was found to have administered the propofol sedative to the ‘King of Pop’ before he suffered a cardiac arrest in June 2009.

He served two years.

The former cardiologist has now been filmed claiming that Jackson told him about the ‘many sufferings’ he experienced ‘at the hands of his father’ when he was a child.

‘The cruelty expressed by Michael that he experienced at the hand of his father’ Mr Murray said.

Trailing off – he added: ‘The fact that he was chemically castrated to maintain his high-pitched voice is beyond words’.

Later he said: ‘I hope Joe Jackson finds redemption in hell’.